花费
扩大
缩减
分享
expanding [ɪkˈspændɪŋ]:v.扩大,增加,增强(尺码、数量或重要性);扩展,发展(业务);细谈;详述;详细阐明
例句:Engineers noticed that the pipes were not expanding as expected.
句意:工程师注意到管道并没有如预期那样膨胀。