They are priceless, unique and irreplaceable.它们是独一无二、不可替代的无价之宝。The Radio frequency communication irreplaceable makes mobile communication realized in underground mine.射频通信无可替代地实现了矿山井下的移动通信.B: You are very upset with the ...
He felled his opponent with a single blow.他一拳击倒了对手。The woodcutter felled the tree.樵夫砍倒了那棵树.The trees on the mountains within my range of vision had all been felled.山上我视野范围内的树木都被砍倒了。...