The pre-assessment of labour safety and hygiene of projects is a work of importance,which can help promote the design of labour safety and hygiene of projects.是什么意思_The pre-assessment of labour safety and hygiene of projects is a work of importance,which can help promote the design of labour safety and hygiene of projects.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句