Tractive effort
[化] 牵引力
🧩 词语组成解析
a. 牵引的, 拖的\\n[机] 牵拉, 拉
🗣️ 情景例句
I'm not really sure.
我不是太有把握。
Then, all of a sudden, it became cloudy and began to rain.
可是突然天就变了，乌云密布并下起雨来。
What's wrong?
怎么了？