求翻译：认真开好每天的班前会，根据施工环境、作业条件、工作内容、机具情况、天气变化等作好针对性的书面安全交底，并要有交底人和被交底人的签字。是什么意思？

Seriously a good first day of classes will be, according to the construction environment, working conditions, job content, equipment, weather changes make specific written safety tests, and tests have been tests and the signature.

A day before the class seriously make a good will, in accordance with construction environment, operational conditions, contents of the work, machine tools, changes in the weather conditions, such as the writing for a good job of targeted Security to the floor, and there should be handed over, and w

Opens the daily shift-change briefing earnestly, according to the construction environment, the work condition, the work content, the machines and tools situation, the weather change and so on finishes the pointed written security to give the low-down, and must have gives the low-down the human and

Conscientiously do a good job every day, before the Council under construction environment, working conditions, job content, well targeted machines, weather changes, such as writing security to give the low-down, and to have the low-down and low-down people signed.

Conscientiously do a good job every day, before the Council under construction environment, working conditions, job content, well targeted machines, weather changes, such as writing security to give the low-down, and to have the low-down and low-down people signed.