| 单词 | the bottom drops/falls out (of sth) |
| 释义 | ● the bottom drops /falls out (of sth )people stop buying or using the products of a particular industry （某行业）产品滞销；销量暴跌◆ The bottom has fallen out of the travel market . 旅游市场出现了萧条局面。See also bottom |
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