Claisen reaction
[機] 克萊森縮合
?? 詞語組成解析
??? 情景例句
What do you propose to do about it?
那你建議要怎么辦？
You were here in February,weren't you?
二月份你曾在這里，對不對？
Look at those people in the boats.
瞧船里的那些人！