Polypeptidase
多肽酶
🗣️ 情景例句
Make sure you file this invoice straight away; I don't want it being misplaced.
记得现在就把发票给开了，我可不想弄错了。
Could you tell me where is the rest room?
你能不能告诉我洗手间在哪里？
I left a suitcase on the train to London the other day.
几天前我把一只手提箱忘在开往伦敦的火车上了。