If we all muck in, we could have the job finished by the end of the week.

如果我们大家一块儿干，到本周末就可以完成工作。

If we all muck in we'll soon finish the work.

如果我们大家都参加进去，很快就能完成这项工作。

You don't want people to think that you are too proud to muck in, do you?

你不想让人认为你这人很高傲而不想加入，是吗？

Remain suspicious because Chinese are considered as hiding muck in programs them.

仍然可疑，因为中国被视为藏匿在淤泥程序。

Fit, courageous and robust, he was the first to volunteer, the first to muck in and the first to offer help to others.

兼具配合、勇气与强壮，他总是第一个提出志愿、第一个动手工作、也第一个向别人提供帮助。