Aldehydene
乙炔
??? 情景例句
Sure. It's up ahead to your left.
好的。往前走，在你的左邊。
As requested, we now hold this offer open for a further 5 days since 24th April.
按你方要求，我方報價有效期延長5日，從4月24日起。
Bonny, take the next dirt track on the left. That will take us down into the valley.
波尼，沿著左邊的下一個土路走。我們將沿路而下進入河谷。