Be proficient at
精通于
🧩 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;
at
[æt]
prep. （表示位置）在;在（某时间或时刻）;以，达; 向，朝;
n. 阿特（老挝辅币单位，100 阿特 = 1 基普）;
🗣️ 情景例句
The bank canceled his loan and took back his car.
银行取消了他的贷款并收回了他的车。
Cheerful company shortens the miles.
旅有好旅伴，不觉行程远。
you will realize that a modern navy is a good place to study noise.
你就会认识到现代海军是研究噪音的好地方。