Ondulation
. 波浪式振荡, 波动
🗣️ 情景例句
That's why the new community center is a good idea.
这就是为什么说新的社区中心是个好主意。
To toast, their health!
为了健康干杯！
While the men had been working inside the ship, the air-line had been giving off oxygen.
当工人们的在船舱里干活时，供气管一直在排放氧气。