形容詞 unsafe:

1. lacking in security or safety
   同義詞：insecure
2. involving or causing danger or risk; liable to hurt or harm
   同義詞：dangerous
3. not safe from attack
   同義詞：insecure

1. The effluent from the factory makes the river unsafe for swimming.
   工廠放出的廢水把這條河弄得不能游泳了。
2. The auto- maker recalls a lot of cars that are unsafe.
   汽車制造商召回許多不安全的車輛。
3. It's unsafe for her to go alone.
   她單獨去是很危險的。
4. She lives in an unsafe city.
   她住在一個不安全的城市中。