Footer
Download on the App StoreGet it on Google Play

About

  • About Us
  • Our Learning Services
  • Join Us
  • FAQ
  • Hot Tags

Services

  • Pronunciation Challenge
  • Saved
  • Search Vocabulary
  • Blog

Channels

Levels

  • A1
  • A2
  • B1
  • B2
  • C1
  • C2
Privacy˙Terms˙
©2026 VoiceTube Corporation. All rights reserved

Pronunciation ChallengeHow Classrooms Slow Your Brain Down

Host : Annie Huang
0
0
0

Have you guys have experiences that you feel sleepy when in a classroom or an office?

0:00
0:00

Challenge History

30
31
1
2
3
4
5
Total 0 Challenges Completed

Today's Sentence

Video not in English?
How Classrooms Slow Your Brain Down
The longer we stay in an unventilated space, especially with multiple people, the higher the concentration of carbon dioxide in the atmosphere.
Original Video：How Classrooms Slow Your Brain Down

Key Vocabulary

1. unventilated

unventilated

[ʌnˋvɛntə͵letɪd](adj.)

ventilate

[͵vɛnt!ˋet](v.)

vent

[vɛnt](n.)

2. concentration

concentration

[͵kɑnsɛnˋtreʃən](n.)

3. atmosphere

atmosphere

[ˋætməs͵fɪr](n.)

0 participants have completed today's challenge

Sunny Shih5 years ago

^ ^

0:00

Dreamer5 years ago

0:00

mhoq5 years ago

0:00

Frank5 years ago

0:00

August5 years ago

Thank you, Annie. Have a great day, everyone.

0:00

levi4 years ago

0:00

Michelle4 years ago

0:00

Freda Ke4 years ago

0:00

Freda Ke4 years ago

0:00

Chen4 years ago

0:00

Pronunciation Challenge list

04/24
Deliver Hard News with Compassion
HostVoiceTube
04/23
【Special Episode】Let's review your pronunciation!
HostMikeT
04/22
A Dictionary of Love
HostVoiceTube
04/21
【Special Episode】Let's review your pronunciation!
HostMikeT
04/20
Where the World's Rich Are Moving Their Money
HostVoiceTube
04/19
【Special Episode】Let's review your pronunciation!
HostMikeT
04/18
The Wisdom of African Proverbs
HostVoiceTube
04/17
People With Few or No Friends Share These 5 Rare Traits
HostVoiceTube
04/16
【Special Episode】Let's review your pronunciation!
HostMikeT
04/15
Will U.S. Strikes On Iran Trigger Stagflation Risk?
HostVoiceTube