Electrical alternation ot beart
[医] 心电交替
🧩 词语组成解析
alternation
[ˌɔ:ltə:'neiʃən]
n. 交替，轮流，间隔;交替工作;更迭;变换;
abbr. 加班（Overtime ）；圣经旧约（Old Testament）；职业疗法（Occupational therapy）
🗣️ 情景例句
We have to advance the building of the new school.
我们必须促进新学校的建设。
No safe wading in an unknown water.
未知水深浅，涉水有危险。
Oh, we must find them. What are they wearing?
哦，我们必须找到她们。她们穿什么衣服？