Spent gases
废气
🧩 词语组成解析
spent
[[spent]]
a. 用尽的, 精疲力竭的\\nspend的过去式和过去分词
n. 气体
🗣️ 情景例句
and tell the Levinsons we have their cute little spaniel.
告诉Levinson夫妇他们可爱的小猎犬在我们这。
When the police arrived, I was doing the housework.
当警察来的时候，我在做家务。
Now that they could ride horses, it became easier to hunt the bison, a type of cattle which used to exist in huge numbers on the plains of America.
当他们从一个营地搬到另一个营地去的时候，他们就可以利用这些野马来运载货物。既然土著人会骑马了，猎取野牛也就容易了。这种野牛以前是成群结队地生活在美洲平原上的。