Ejector seat levers can only be used once, and their consequences are significant and irreversible.弹射座椅操纵杆只能用一次, 它的使用将引起重要的变化,而且这个过程是不可逆的.The workers can manipulate the gears and levers of a machine skillfully.工人们能熟练地操纵机...
She is a nurse's aide.她是护士的助手.He was supposed to act as the marshal's aide.他的职责是作指挥官的副官.An aide to the governor will be at the hearing here this afternoon.州长的一位助手要来出席今天下午的听证会....