Unsafe injections and sexual contact can also spread the virus .

不安全的注射以及性接触也能传播乙肝病毒。

More parts of the region are unsafe for aid workers .

对援助人员来说，不安全的地方越来越多。

But unsafe building work remains a chronic problem in china .

但是不安全的建筑工程在中国仍然是一个长期的问题。

Avoid online scams , unsafe transactions and forgeries with simple site identity .

避免了诈骗、不安全的交互和伪造的简易网站。

It is unsafe because a rapist could hide in there and attack women .

很不安全，因为抢劫的人能藏在那里，袭击妇女。