Refraction makes a straight stick look bent if it is partly in water.
折射使一根部分浸在水中的直棍子看起来是弯的。
Find a straight stick and put it in the ground in a place where you can mark its shadow.
①找一个直棍，将其立在一个你可以标记它的影子的地方。
No… not THAT straight, you don’t want to look like a stick.
不……不是那样坐直，你并不希望自己看上去像一根木头吧。
We enjoy the straight crookedness of a good walking stick.
我们都喜欢手杖曲中有直、直中带曲。
The tubes were attached to a long stick which helped keep_the_rocket_moving in a straight direction.
这些管子被系到一根长棍上，这根长棍可以帮助火箭笔直地运行。
The tubes were attached to a long stick which helped keep_the_rocket_moving in a straight direction.
这些管子被系到一根长棍上，这根长棍可以帮助火箭笔直地运行。
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