Be busy doing
成人 Adult Edu忙于(做)...
🧩 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;
busy
['bɪzi]
adj. 忙碌的;占线;繁华的;爱管闲事的;
vt. 忙着做某事;使奔走;使经营;
n. 〈英俚〉侦探;包打听;
n. 行为, 活动
🗣️ 情景例句
You won't believe this.
你会觉得难以置信。
There are one hundred pennies in every dollar.
每美元是一百美分。
What is needed in the case of noise is a study of large numbers of people living under noisy conditions,
对于噪音问题，需要对大量生活在噪音中的人进行研究，