1．(2020·全国卷Ⅰ)Glowing plants could reduce this distance and therefore help save energy.避免；距离
2．(2020·全国卷Ⅲ)And when he saw the mists rising from the river and the soft clouds surrounding the mountain tops，he was reduced to tears.使处于……状态
3．(2020·江苏卷)One funny observation about a problem in your life can be funny，but five is just complaining，no matter how smart you think you are.发牢骚
4．(2017·全国卷Ⅱ)They pump out perfumes designed to attract different insects who are natural enemies to the attackers.意图
