Substitution isomerism
[醫] 位置異構
?? 詞語組成解析
substitution
[?s?bsti'tju:??n]
n. 代替;代用;替換;<化>取代（作用）;
n. 異性\\n[化] 異構; 異構現象
??? 情景例句
Will you be stopping anywhere else before going to the train station.
去火車站之前是否還到別的地方？
As a sign of friendship, Gordon and Peter clasped hands.
為了象征友誼，高頓和彼德互相握手。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧氣在空氣中的含量達到25%，它就要燃燒。