A class that is not thread-safe can often be used safely in a multithreaded program as long as you ensure that instances of that class used by one thread are not used by other threads.

非线程安全类通常可以安全地在多线程程序中使用，只要您能确保一个线程所用的类的实例不被其它线程使用。

youdao

Debit cards are relatively safe to use (as long as you keep your PIN private), but if you can't find one of your bank's ATMs, you'll have to pay for the privilege of using another bank's cash machine.

借记卡相对来说安全一点（只要你的个人专用密码只有你自己知道），但是如果旅游地没有你所使用借记卡的自动取款机，那你就要用别的银行的取款机取款，那意味着你需要支付跨行取款费用。

youdao

So long as the pricks hurt, you are safe.

只要戳的时候还会痛，你就还算安全。

youdao