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英语翻译Do you know that you use your watch as a compass(指南针)on

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英语翻译
Do you know that you use your watch as a compass(指南针)on a sunny day?Take a watch and point the hour-hand in the direction of the sun.【Imagine a line which runs from the center of the watch through a point halfway between the hour-hand and number one.】 This line will surely point south.
1、解释【】里句子中的run 如何翻译?through a point halfway 如何翻译?
2、标准翻译【】里的句子,
英语翻译Do you know that you use your watch as a compass(指南针)on
un是通过.
through a point halfway 这里你应该这样分解这句话去理解
run "from the center of the watch" "through a point" "halfway between the hour-hand and number one"
一条线通过  表的中心 和 一点,那这一点是哪一点呢,就是时针和12点的连线的中点.那两个点就决定了这样一条线,这条线指的就是南方.
2.想象有一条线,这条线通过了表的中心和时针与12点连线的中点.
 
 
再完整一点说明好了.这里实际上是一种利用手表指南的方式.将时针对准太阳,那么时针与12点连线的中点与表的中心连线指的就是南方.