put on (或lose) weight become fatter (or thinner) 体重增加,发胖(或体重减少、变瘦)。throw one's weight about (或around) informal be unpleasantly self-assertive〈非正式〉 趾高气扬,耀武扬威,滥用权势。throw one's weight behind informal use one's influence to help support〈非正式〉 (利用影响力)支持。the weight of the world used in reference to a very heavy burden of worry or responsibility 很大的担心;重大的责任 he continues to carry the weight of the world on his shoulders. 他继续肩负重任。be a weight off one's mind come as a great relief after one has been worried(担心之后)十分放松,松了一大口气。worth one's weight in gold (of a person) exceedingly useful or helpful(人)极其有用(或有帮助)的。