Double reaction
[電] 雙重反應
?? 詞語組成解析
double
['d?bl]
adj. 雙的;兩倍的;兩面派的;雙人用的;
vt. 使加倍;把…對折;重復;
vi. 加倍，加倍努力;快步走;
adv. 兩倍地;雙重地;
n. 兩倍;雙精度型;
doub二，雙+le反復 → 反復兩倍 → 翻倍
??? 情景例句
let me know.
告訴我。
I want to hear your opinion.
我想聽聽你們想法。
when she remembered that she had gone shopping after the home help had left and she knew that she had turned both keys in their locks,
但突然記起來了，幫手是在她出去買東西之前走的，她還記得曾用了兩把鑰匙把大門鎖上了。