Some of the machine tools are so small that they can be moved by hand. Others arc so big that they weigh 100 tons or more.
有些机床很小，用手就可以搬动；另外一些则很大，重达100吨或100吨以上。
When floating in water, persons or other heavy objects are forbidden to weigh on the machine.
本机浮于水中时严禁人员及其它重物压于机器上。
Professor:I'm going to weigh myself on this weighing machine.
伯菲教授：就在这个磅秤上称。
Some of the machine tools are so small that they Can be moved by hand. Others are so big that they weigh 100 tons or more.
有些机床很小，用手就可以搬动；另外一些则很大，重达100吨或100吨以上。
Some of the machine tools are so small that they Can be moved by hand. Others are so big that they weigh 100 tons or more.
有些机床很小，用手就可以搬动；另外一些则很大，重达100吨或100吨以上。
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