deaf-and-dumb signs的用法和樣例：
例句
- Since then I have paid special attention to those who look like deaf mutes.
從此以后，我就特別注意聾啞人的特征，還從他們那里學(xué)會(huì )了一些常用的手語(yǔ)。 - The deaf and dumb are profoundly grateful for this provision made on their behalf for their general welfare.
由于代表他們提供的這些物資提高了這些聾啞人的總體福利，這些聾啞人表達了深切的謝意。
