onionon•ion /'ʌnjən/

n C,U 洋葱

词组know one's onions 英非正式 对自己的工作很内行；精明干练

• He is a man who knows his onions. 他精明强干。

off one's onion(s) 神志失常；精神错乱

• After four drops of beer he is properly off his onion. 喝了四杯啤酒之后，他就糊里糊涂了。