Alkenoic acid
[化] 链烯酸
🧩 词语组成解析
🗣️ 情景例句
Hello, nice to meet you. By the way, nice shoes you have.
你好，很高兴见到你。 顺便提一下， 你的鞋子很漂亮。
Have you invited any boys?
你邀请男孩吗？
No one noticed the boy as he crept off.
当男孩从船里爬出来时，谁也没有发现他。