Tetracylated
四酰基化了的
🗣️ 情景例句
Catching a fish is a lot more complicated than just throwing a worm in the water.
钓鱼可不是把鱼饵抛进水里那么简单。
The leopard can never change its spots.
花豹永不能改变身上的斑点（指：本性难移）。
One day a letter from my father arrived at the school, asking for a teacher for me.
有一天，我父亲的信寄到学校，请求为我聘用一名教师。