例句：
1、We have been up against various difficulties, but we surmounted them one by one .
我们曾经碰到各种各样的困难，但我们一个个克服了。
2、Schools use various methods of testing.
学校采用各种各样的测试方法。
3、Can you talk me through the various investment options?
你能给我详述可以选择的各种投资方法吗？
4、The methods are many and various.
方法很多且各不相同。
