n. 操练;钻头;军事训练;(应对紧急情况的)演习;
vt.& vi. 钻(孔);打(眼);操练;训练;
vt. 作…演习,操练;
🗣️ 情景例句
How much did you estimate this job is going to cost us?
你估计这工作要花我们多少钱?
He works best who knows his trade.
内行的人做他的事一定会做得最好。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.