Ring substitution
[化] 環上取代作用
?? 詞語組成解析
ring
[ri?]
n. 戒指，指環;鈴聲，鐘聲;環形物;拳擊場;
vt. 形成環狀;環繞;使（例如鈴）響;打電話給;
vi. 按鈴，敲鐘;回響;成環形;
substitution
[?s?bsti'tju:??n]
n. 代替;代用;替換;<化>取代（作用）;
??? 情景例句
Well, at least you're acting like you feel better.
不過， 至少你表現得好像你感覺好多了。
Good watch prevents misfortune.
有備無患。
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.
火災過后，所有的管道和龍頭都被標得一清二楚，而且加入勞動隊伍的新工人在開始工作之前要接受有關的安全教育。