短语讲解：

1.He is concerned about the impact of silver on the environment, but he says there is a process to take care of it.

take care of 照顾
例句：Don't worry yourself about me, I can take care of myself
你别担心我，我能照顾好自己。

2.Now Westerhoff says he wants to find out if people really would wash their clothes less if they do not smell.

find out 发现; 使发作; 使受惩罚
例句：I'll find out the address,and ring you back.
我找到地址后再与你通电话。

3.While they may favor one kind of fabric over the other, many athletes wear both wool and synthetics, depending on where they are, and what they are doing.

depend on 依赖; 相信; 信赖; 随…而定
例句：Can I depend on you?
我可以信任你吗？