根据英文解释,写出相应的英文单词

根据英文解释,写出相应的英文单词

题目
根据英文解释,写出相应的英文单词
1.make air,rivers,ect.dirty and dangerous
2.a word that you use to say what is possible or true when another thing happen or true
3.something bought or got as a gift to remind a person or a place
4.a railway system under the ground of a city
5.belonging to a certain place or area
6.being related with the west partof the world
7.fail to hit,catch,reach
我把2的完整版发出来
2.------(a word that you use to say what is possible or true when another thing happen or true)you press the button,the machine will start.
答案
pollute污染
evidence证据
souvenir纪念品
subway地铁
field领域
Europe欧洲
lose失去
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