Zero-sum
a. 得失所系的
🧩 词语组成解析
zero
['zɪro]
n. （数字）0;零度;
adj. 全无的，没有的;
v. . 聚焦，集中;
sum
[sʌm]
n. 总数;算术;金额;概略，要点;
vt.& vi. 总计;总结，概括;归纳;
🗣️ 情景例句
She is not able to take your call at the moment.
她现在没办法接你的电话。
His extension number is 285.
他的分机号码是285。
I didn't know she could swim. Who taught her?
我不知道她会游泳。谁教她的？