only if

英 [ˈəʊnli ɪf]

美 [ˈoʊnli ɪf]

conj. 只有当

英英释义

adv

Missing join predicates, but only if a foreign key is defined.
丢失连接谓词，只在定义了外键的情况下。
I'll do that, but only if we set a few rules.
我可以干，但我们得定几条规矩。
The medicine works only if taken for a long time.
此药久服方见功。
Money can buy happiness, but only if you spend it on someone else, researchers reported.
研究人员日前称，金钱可以买到快乐，但前提是你得把钱花在别人身上。
Perhaps, but only if the state-owned company is willing to make some changes.
也许吧，但只有这家国有企业愿意做一些改变，才可能脱离困境。
Syria will attend only if the negotiations deal with issues of substance.
只有在谈判涉及重大问题时叙利亚才会参加。
Remember that the type is defined only if you use a location in the grammar!
记住，只有当您在文法中使用位置时才会定义类型。
But seriously, these tricks will work only if you have at least the basics of English.
但是，说真的，这些窍门要想发挥作用，至少要有基本的英语能力。
Please make the changes only if no-one has modified the record since I read it.
请仅在从我读取该记录后没有人进行修改的情况下进行更改。
One can grasp a foreign language only if he studies hard.
唯有努力学习，才能掌握外语。