Upper bound
[计] 上界, 下限
🧩 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;
bound
[baʊnd]
vi. 跳，弹跳;限制;接壤;
vt. 给…划界，限制;使弹回，使跳跃;束缚;
n. 界限，限制;跃起;（球等的）反跳;
adj. 用带子绑住的;有义务的;装订的，有封面的;[化，物]结合的;
bound(to bind)→装订好的；必定；决心的；被束缚的
🗣️ 情景例句
I'll get you to help serve later.
等一会我会叫你帮忙分菜。
Dead men tell no tales.
死人不会搬弄是非。
They would have continued to struggle against economic odds and would have lived in obscurity.
这家人会继续为克服经济上的拮据而奋斗，并默默无闻地活下去。