Upper explosive limit
[化] 爆炸上限
🧩 词语组成解析
upper
['ʌpə]
adj. 地位较高的;上面的;内地的;地表层的;
n. 鞋帮，靴面;兴奋剂;令人兴奋的经历;
🗣️ 情景例句
But I was lucky enough to have a career as a music teacher
但我很幸运， 有一个音乐教师的事业
Tomorrow comes never.
切莫依赖明天。
After having been instructed to drive out of town, I began to acquire confidence.
在接到把车开出城的指令后，我开始有了信心。