My hands are all mucky.

我的手全弄脏了.

The triaxial tests of sand and mucky soil have been done.

本文对砂土和淤泥质粘土做了室内三轴试验。

When the pond shore is wet it can be very mucky and one tends to sink into it if not exercising care.

而且池塘岸湿的时侯，可能会非常脏而且你不小心的时候很可能一下陷进泥里。