only if

英 [ˈəʊnli ɪf]

美 [ˈoʊnli ɪf]

conj. 只有当

英英释义

adv

Political attacks work only if they find an echo with voters.
政治攻击只有在选民中引起共鸣才会有作用。
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。
You can make progress only if you are modest.
惟虚心乃能进步。
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。
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。
The password is required to open the truststore only if you wish to add certificates to it.
仅当您要向信任存储添加证书时，您需要这个密码来打开信任存储。
Marty finally agreed, but only if Fred would go there with him to give him courage.
马蒂最终同意了，但是要求佛瑞德和他一起去，给他鼓气。
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。
But only if we ask the right questions.
但我们必须要问到点子上。
They can work more effectively only if the XOL package or other binary XML schema is applied.
如果应用了XOL包或其它二进制XML模式，这些标准会更高效。