英语语法分析
lengthen
vt. 使延长；加长
vi. 延长；变长
第三人称单数 lengthens
现在分词 lengthening
过去式 lengthened
过去分词 lengthened
例句
When 28% of English children aged two to 15 are obese, a national shift on the scale achieved by Leeds would lengthen hundreds of thousands of lives.
英国2至15岁儿童中有28%患有肥胖症，利兹市所实现的全国性转变将延长数十万人的寿命。