Students in our schools are taught in a safe, secure environment.

我校学生在安全无忧的环境中接受教育。

The moral characters of men are formed not by heredity but by environment.

人的品德不是遗传下来的，而是在环境中形成的。

a safe environment for marine mammals.

一个适合海洋哺乳动物的安全环境。

persuading people to respect the environment.

劝人们重视自然环境。

the need to protect the environment.

保护环境的必要性。

Their aim is to increase income from tourism without damaging the environment.

他们的目标是在提高旅游业的收入同时避免对环境的破坏。