csc (扣赛肯体 kou sai ken ti)
sec(赛肯体 sai ken ti)
csc 与 sec(正割和余割)的读法
csc 与 sec(正割和余割)的读法
可以写拼音那种,也可以录音哈,
单词怎么写我知道,关键是读
不要写音标哈!
可以写拼音那种,也可以录音哈,
单词怎么写我知道,关键是读
不要写音标哈!
英语人气:946 ℃时间:2020-03-25 12:35:18
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