Sec-propyl
[化] 異丙基
?? 詞語組成解析
SEC
[[sek]]
[計] 秒, 輔助\\n[化] 尺寸排阻色譜法
n. 丙基\\n[醫] 丙基
??? 情景例句
the bank needs to be sure
銀行需要確定
Which one do you want to buy?
你買哪一個？
'He had travelled only seven miles across the Channel when his engine failed and he was forced to land on sea.
但他只在海峽上空飛行7英里，引擎就發生了故障，他只好降落在海面上。