题目内容
adj. based on new ideas, forms or methods that are used to find out what effect they have
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v. to deliberately not include sth. in what you are doing or considering
n. a device that carries people up and down inside buildings
v. to make a serious, angry or worried expression by bringing your eyebrows closer together so that lines appear on your forehead
n. the state of being in a place or situation where there is no protection from sth. harmful or unpleasant;
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