Alpha-substitution
[化] α-取代
?? 詞語組成解析
alpha
['?lf?]
n. 希臘字母的第一個字母;
substitution
[?s?bsti'tju:??n]
n. 代替;代用;替換;<化>取代（作用）;
??? 情景例句
Bye.
再見。
Strong packing will protect the goods from any possible damage during transit.
堅固的包裝可以防止貨物在運輸途中受到任何損失。
Forty-two years later a tunnel was actually begun.
42年以后，隧道實際已經開始建了。