Be engaged in...
从事于..., 忙于...
🧩 词语组成解析
be
[bi]
v. 是;有，存在;做，成为;发生;
aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质;
engaged
[in'geidʒd]
adj. （指厕所等）有人用的;已订婚的;（指电话）占线的;忙碌的;
v. 与某人订婚;保证，约定;从事( engage的过去式和过去分词);吸引或引起（注意、兴趣等）;
🗣️ 情景例句
How can you do business with the americans? You'll need to improve your English first.
你怎么能与美国人做生意？你得先提高自己的英文水平。
This part of the country is very flat.
这个国家这一部分很平坦。
The turtle at last gives up by pulling his feet under his shell and the game is over.
海龟终于屈服了，将4条腿缩进壳内。