Thymamine
胸腺精蛋白
🗣️ 情景例句
Susan's vice-president in charge of new toys and games.
Susan是主管新玩具和新 戏器具的副总裁。
There is a time to speak and a time to be silent.
该说话时说话，该沈默时沈默。
2% for prompt payment, net in thirty days.
立即付款的话可以有九八扣，三十天内付款需付全额。