The shade meaning of "sound":

【声音】sound wave

【听起来】The plan sounds reasonable.

【发音】sound every syllable!每个音节都要发音。

The ship moved slowly forward sounding as she went.航船慢速前进，一路锤测水深。

【完好的】sound metal优质金属

【牢固的】sound casting 坚实的铸件