97标准中文名：轻型金属卷门窗标准英文名：Light-weigh 标准简介： 标准号： JG/T 3039-1997 标准中文名： 轻型金属卷门窗 标准英文名： Light-weight rolling metal doo
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Last year the Federal Aviation Administration agreed to let it weigh more than other light sport aircraft.
去年，美国联邦航空管理局允许其重量超过其它轻型运动飞机。
And students like its light weight, which offers a relief from the heavy books that weigh down their backpacks.
学生们也喜欢它的轻便，这将他们从背后沉重的书包下解放出来。
Large objects generally weigh more than small objects and dark objects weigh more than light colored objects.
体积大的物体要比体积小的物体重，颜色深的物体要比颜色浅的物体重。
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