今日小常识

　　Human beings have been using knives for at least 2.5 million years. They were originally made from rock, bone and flint.

　　人类使用刀子已经有至少两百五十万年了。最初的刀子是用石头、骨头或打火石制成的。

　　所谓的 “到刀子下面 to go under the knife” 意思是动手术，接受手术治疗。

　　例句

　　England's best footballer won't play at the World Cup. He's going under the knife and won't recover in time for the start of the tournament.

　　I had tonsillitis eight times before doctors decided that I needed to go under the knife and have my tonsils removed.

　　请注意

　　不要把这个短语同 put to the sword 混淆，后者的意思是杀戮。

　　The captured soldiers should have been kept in a military prison but instead they were put to the sword. Hundreds were killed.

编辑：张雨

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