3.DECREASE 减少[I] to go down to a lower level, amount, price etc, especially a much lower one〔水平、数量、价格等，尤指较大幅度地〕下跌，下降，降低OPP RISE •The rate of inflation was falling. 通货膨胀率正在下降。•The island is warm all year round and winter temperatures never fall below 10 degrees. 这个岛全年温暖，冬季气温从不低于10度。•He believes that educational standards are falling. 他认为教育水准在下降。[+ from]•Advertising revenue fell from 98.5 million to 93.3 million. 广告收益从9,850万美元跌至9,330万美元。[+ to]•The number of subscribers had fallen to 1,000. 订阅人数已降至1,000人。fall sharply/steeply (=by a large amount)骤降•London share prices fell sharply yesterday. 昨天伦敦股价大跌。