Also, this week we did experiments with sinking and floating. We tested 20 different objects to see if they would sink or float. Before each test, the students guessed at whether they would sink or float, and many of the children were surprised by the results. We concluded that some objects sink or float depending on what they are made of. Wood and air float, but metal sinks.
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Metal but 纽扣
Wood and air float, but metal sinks.
木头和气垫可以浮在上面,但金属不可以。
Wood floats on the water but metal sinks.
木头漂在水面上而金属却下沉。
But we can use the metal of the car to make something else.
但是我们可以用汽车的金属来制造别的东西。
You are no longer a captive but wear the metal of great rank among their people.
VOA: special.2010.07.31
But their shields are made of wicker and they don't have that kind of metal body armor and all that stuff.
而他们的盾是用藤条做的,同时他们也没有金属装甲和其他护具
But at the end of the day, if you move this metal thing aside with your fingers, don't squeeze it too hard.
但是在下课后,如果你用手指触碰这个金属块,不要用力过猛。
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