Cevadic acid
[化] 惕各酸; 瑟瓦酸; (Z)-2-甲基丁烯酸
🧩 词语组成解析
🗣️ 情景例句
She's nine years old.
她九岁。
It is a long lane that has no turning.
路必有弯。
'I might as well have them,' I said sadly.
“我还是买下的好，”我垂头丧气地说。