基本解釋[經(jīng)濟學(xué)]正式訓(xùn)練費用英漢例句雙語例句How much would formal training have cost?正規(guī)的培訓(xùn)服務(wù)的成本又是多少？formal training cost更多例句專業(yè)釋義經(jīng)濟學(xué)正式訓(xùn)練費用