keystone
US /ˈkiˌston/
・UK /'ki:stəʊn/
C2
n.NounCentral building block at the top of an arch
The keystone contained the initials of the builder and year of erection
Video subtitles
The Only Election Josh Shapiro Ever Lost
- So you've Pennsylvania State Rep, County Commissioner, Pennsylvania Attorney General, and in 2022, you became governor of the Keystone State.
So you've Pennsylvania State Rep, County Commissioner, Pennsylvania Attorney General, and in 2022, you became governor of the Keystone State.
- and in 2022, you became governor of the Keystone State.
and in 2022, you became governor of the Keystone State.
10 Viral Moments That Changed the World
- Blocking the Keystone Pipeline was something that I'm very proud of him doing.
Blocking the Keystone Pipeline was something that I'm very proud of him doing.
- Blocking the Keystone pipeline was something that I'm very proud of him doing.
Blocking the Keystone pipeline was something that I'm very proud of him doing.
Advanced Snowboard Carving with Ryan Knapton
- I saw a keystone.
I saw a keystone.
- Uh, I—earlier in the year I saw a keystone;
Uh, I—earlier in the year I saw a keystone;
Speak English Fluently and Become Like a Native Speaker
- I found one just on Keystone Resort.
I found one just on Keystone Resort.
- and then in Chrome, you click "Select and Speak." Keystone Resort.
and then in Chrome, you click "Select and Speak." Keystone Resort.
President Obama Speaks on Climate Change
- I know there's been, for example, a lot of controversy surrounding the proposal to build a pipeline--the Keystone Pipeline--that would carry oil from Canadian tar sands down to refineries in the Gulf.
I know there's been, for example, a lot of controversy surrounding the proposal to build a pipeline--the Keystone Pipeline--that would carry oil from Canadian tar sands down to refineries in the Gulf.
- But I do want to be clear: Allowing the Keystone Pipeline to be built requires finding that doing so would be in our nation's interest.
But I do want to be clear: Allowing the Keystone Pipeline to be built requires finding that doing so would be in our nation's interest.
How Otters Are Saving Earth’s Underwater Forests
- They are a keystone species and they really do so much for these kelp forests, keeping them healthy and keeping them balanced.
They are a keystone species and they really do so much for these kelp forests, keeping them healthy and keeping them balanced.
- They are keystone species,
They are keystone species,
An Ocean On The Lake | Kiana the Sea Otter | ABC7 Chicago
- Sea otters are what you would call a keystone species.
Sea otters are what you would call a keystone species.
- Sea otters are what you would call a keystone species.
Sea otters are what you would call a keystone species.
California Sea Otters: Life on the Edge - Full Episode
- Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.
Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.
- Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.
Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.
Mastering Your Habits
- The last of Charles Duhigg points that I really want to mention in this video are what he calls Keystone habits
The last of Charles Duhigg points that I really want to mention in this video are what he calls Keystone habits
- Other Keystone habits might be things like exercising or writing in a gratitude journal
Other Keystone habits might be things like exercising or writing in a gratitude journal
California Sea Otters: Life on the Edge | Changing Seas
- Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.
Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.
- Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.
Despite the many challenges sea otters face, as keystone predators, they play a vital role in the ecosystems they inhabit.