然而针头大小对结果的作用还不确切。
It is not clear what role the size of the needle may have in the outcome.
这一小块天空，正如一臂之遥处的针头大小。
This tiny piece of sky, the size of a pinhead held at arm's length.
一滴针头大小的液体洗涤剂可以破坏一公升水的表面张力。
One drop of detergent liquid the size of a pin head destroys surface tension in 1 liter of water.
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