“半日花”的英语可以翻译为：Ladanum，laudanum，rockrose ...

我们只是坐了一会,聊了大约半小时.We just sat and talked for half an hour or so.史蒂夫在前半小时里没说几句话.Steve barely said a handful of words during the first half hour.他迟到了半小时.He's a half hour late....

那个F是本位音还是升半音？Is that F a natural or a sharp?这首曲子我弹不来 -- 降半音音符太多了.I can't play this - there are too many flats.降B音比B音低半音.B flat is a semitone below the note B....