客人应当观察主人，如果他们鞠躬低头，他们也应这样。

Guests should watch the host and if they bow their heads, they should join them.

youdao

便携式研磨工具应装有安全防护装置，这样不仅可防止工人接触运转的砂轮表面，而且他们也不会被破裂时飞溅的碎片击中。

Portable grinding tools need to be equipped with safety guards to protect workers not only from the moving wheel surface, but also from flying fragments in case of breakage.

youdao

即使这样，他也不得主动这样做，而要服从众多主教的决断，并应他们的促请而行。

And even then he must not do so of his own accord, but in obedience to the judgment of many Bishops and at their urgent request.

youdao