Now try putting a large paper clip on one side and small one on the other.
Now try putting a large paper clip on one side and small one on the other.
现在试着在直尺一端放一枚大一些的曲别针，另一端放一枚小一些的。
Now try putting a large paper clip on one side and small one on the other.
现在试着在直尺一端放一枚大一些的曲别针，另一端放一枚小一些的。