only if

英 [ˈəʊnli ɪf]

美 [ˈoʊnli ɪf]

conj. 只有当

英英释义

adv

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。
The medicine works only if taken for a long time.
此药久服方见功。
The latter will work only if you are on the same network as the WPAR manager.
仅当您处在与WPAR管理器相同的网络中时，后面一种方法才能正常工作。
This ensures that you save the new Hotel only if it doesn't already exist.
这确保了只在新Hotel还不存在时才保存它。
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。
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。
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。
This tip is useful only if you decide to support both javac and ECJ.
如果决定同时支持javac与ECJ，这一提示将很有用。
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。
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。