The labour operations of all must be in the proper proportion to one another, the workmen must live as near to one another as possible, and their co-operation must be insured.是什么意思_The labour operations of all must be in the proper proportion to one another, the workmen must live as near to one another as possible, and their co-operation must be insured.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句