Elementary sum
[计] 基本合
🧩 词语组成解析
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
because he didn't want the responsibility of holding them.
因为他不想承担保管它们的责任。
Experience keeps a dear school,but fools learn in no other.
经验学校学费高，愚人旁处学不到。
Rastus leads an orderly life.
拉斯特斯生活很有规律，