Polypeptidase
多肽酶
🗣️ 情景例句
and we must prepare this room.
我们得收拾好房间。
How long have you been studying English?
你学了多长时间的英语了？
She serves as an impressive reminder of the great ships of past.
它给人们留下深刻的印象，使人们回忆起历史上的巨型帆船，