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
It's six o'clock.
已经六点了。
We have asked you to come to our Thank you Party today.
我们邀请你们参加我们今天的“感恩会”。
I think that maybe his Chinese teacher will give Jim some work to do during the holiday.
我想吉姆的汉语老师也许会给他布置一些假期作业。