Insufficient or Excessive Allowances for Labor: A frequent cause of error in estimating is allowing too much or too little for labor to do the job.是什么意思_Insufficient or Excessive Allowances for Labor: A frequent cause of error in estimating is allowing too much or too little for labor to do the job.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句