Try binoculars and compasses, too.
也可以用双筒望远镜和罗盘。
Will you get me a pair of compasses?
请给我买一副圆规好吗？
Will you get me a pair of compasses?
如果你有一副圆规，就很容易画一个圆。
I bought a pair of compasses in the shop.
我在这家商店买了一副圆规。
Now we begin to draw a circle with compasses.
现在我们开始用圆规画一个圆。
Use your compasses to draw a circle to circle.
用圆规画圆必须要有圆心。
Most of us take it for granted that compasses point north.
大部份的人都认为，磁针会指向北方是理所当然的。
It is easy to describe a circle if you have a pair of compasses.
如果你有一副圆规，就能很容易画一个圆。
What's more, these compasses would be small and would consume very little energy.
另外，这些新型罗盘将小巧玲珑并且能耗极低。
Now, use your compasses to measure the attitude of the two limbs of the anticline.
现在用你们的罗盘去测量一下那个背斜两翼的产状。
Now, use your compasses to measure the attitude of the two limbs of the anticline.
现在用你们的罗盘去测量一下那个背斜两翼的产状。
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