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英语翻译Do you know that you can use your watch as a compass on

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英语翻译
Do you know that you can use your watch as a compass 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 half-way between the hour-hand and number one.
This line will surely point south.
If you know astronomy a little,you will understand why this works.In
the northern half of the earth,the sun is in the south at noon.In our
country the real noon is one o'clock.If at that time we point the hour-hand
at the sun,the hour-hand and number one will point south.That is why you
must imagine a line which will run from the center of the watch through a
point half-way between the hour-hand and number one.It will point south.If you are in the southern
part of our planet,you must point number 12 at the sun.The line which you can imagine between number
twelve and the hour-hand will then show north.
Do you know that you can use your watch as a compass 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 half-way between the hour-hand and number one.
This line will surely point south.
你知道么在晴朗的日子里,你的表可能用来当作指南针?拿出表,时针指向太阳,想象着从表的中心发出一条光线穿过时针和数字1的中点线,这条光线指向的就是南方.
If you know astronomy a little,you will understand why this works.
如果你懂得一点天文知识,你就会知道这是什么原理了.
In the northern half of the earth,the sun is in the south at noon.
在北半球,太阳中午就在正南方.
In our country the real noon is one o'clock.If at that time we point the hour-hand
at the sun,the hour-hand and number one will point south.That is why you
must imagine a line which will run from the center of the watch through a
point half-way between the hour-hand and number one.It will point south.If you are in the southern
part of our planet,you must point number 12 at the sun.The line which you can imagine between number
twelve and the hour-hand will then show north.
在我们国家真正的中午时段是下午一点钟.如果在那个时间我们将表的时针指向太阳,时针和数字1指向的就是南方.这就是为什么你需要想象着从表的中心发出一条光线穿过时针和数字1的中点线.它指向的就是南方.如果你是南部,你必须将数字12指向太阳.你想象的光线应该从数字12和时针之间射出,指向的是北方.