Conservative substitution
[化] (構型)保持置換; 保存性置換
?? 詞語組成解析
conservative
[k?n's?v?t?v]
n. 保守的人;（英國）保守黨黨員，保守黨支持者;
adj. 保守的;（英國）保守黨的;（式樣等）不時新的;
con加強+serv保持+ative...的→ 保守的
substitution
[?s?bsti'tju:??n]
n. 代替;代用;替換;<化>取代（作用）;
??? 情景例句
What are you going to do about your appointment
那怎么辦
I've got a terrible pain in my back.
我的背很痛。
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.
一旦我們找到這樣一顆行星，我們就要想辦法將它的恒星射過來的光線遮暗，這樣我們就能徹底“看見”這顆行星，并分析它的大氣層。