Debbi
(非洲东部做量具用的)四加仑汽油桶
🗣️ 情景例句
Never pump gas with the engine running.
发动机在运转时，别加油。
The children were thrilled with joy at the sight of the parade.
孩子们看到游行队伍时异常兴奋。
below 20 per cent, its bactericidal action is negligible.
浓度低于20％时，杀菌能力基本上就不存在了。