n.
1. (应酬话等的)惯用语句,客套话[C]
\"How do you do?\" is a polite formula.
\"您好。\"是客气的套语。
2. 惯例,常规;准则,方案[C][(+for)]
A formula for settling the border dispute has been worked out.
已拟定一个解决边界纠纷的方案。
3. 配方,处方[C][(+for)]
The formula of the medicine is still a secret.
此药的配方仍是秘密。
4. 【数】公式;方程式[C][(+for)]
5. 【化】分子式[C][(+for)]
6. 【美】配制成的婴儿奶粉或奶水[U]
If you are not planning on breastfeeding, you have to decide on a formula.
如果你不打算喂母奶,那么你得决定选一种婴儿奶粉(水)。