例句：
1、Sound travels better in water than in air.
聲音在水中比在空氣中傳播得快。
2、She looked round at the sound of his voice.
聽到他的聲音，她扭頭看了看。
3、This gives the design team a sound basis for their work.
這為設(shè)計(jì)組開展工作提供了堅(jiān)實(shí)的基礎(chǔ)。
4、The first year provides students with a sound theoretical basis for later study.
第一年為學(xué)生以后的學(xué)習(xí)奠定堅(jiān)實(shí)的理論基礎(chǔ)。
5、They had a wonderful time by the sound of it.
聽起來他們好像過得很愉快。