Prezynogen
[化] 母酶原
🗣️ 情景例句
Do you ever think about your clildhood?
你回忆过童年吗？
If your prices are more favorable than those of your competitors we shall send you our order.
如果你方价格比其他竞争对手的优惠，我们将向你们订货。
No wonder you can't sleep when you eat so much.
你吃这么多难怪睡不着。