Translation of "gnash" into Chinese

The Greek word for “mastic” is related to a term that means “to gnash the teeth.”

译做“香脂”的希腊语跟“咬牙”一词有关。

One could almost hear the collective gnashing of teeth in the US, especially in the Congress.

我们几乎可以听到美国国内,特别是国会里咬牙切齿的声音。