这把刀很快。
Not very good news but there is nothing to do except taking a sharp knife into the hand and going to sleep.
不是好消息但是除了在在睡觉的时候手中拿着一把刀子也无计可施。
This knife is sharp ; you must be very careful when using it.
这把刀很锐利；你使用时要非常小心。
The knife with which we cut the bread is very sharp.
我们用来切面包的小刀很锋利。
The knife with which we cut the bread is very sharp.
我们用来切面包的小刀很锋利。
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