Quarternary structure
[化] 四级结构
🧩 词语组成解析
[计] 四元的
🗣️ 情景例句
I don't understand.
我不懂你在讲什么。
The worker is pounding steel pipes to mend the leakage of water.
管道工为了修缮漏水而敲打着下水道的铁管。
The development of films with sound became a problem for Chaplin.
有声电影的研制对卓别林来说就成了问题。