Behind me my brother-a year younger than I-was playing placidly upon the floor with a toy.
在我身后,比我小一岁的弟弟正在地板上一声不响地摆弄玩具.
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Years ago Pauline blew off his fingers messing around with homemade rockets.
多年前他在摆弄自制火箭时炸飞了手指.
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The Chemists have tinkered with heat and metal catalysts to refine their materials.
化学家摆弄热和金属催化剂来提炼.
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He's been tinkering with that engine for hours, but It'still won't go.
他花了几个小时摆弄那个引擎,想修好它, 但它还是不转.
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