Hexadienoic acid
[化] 己二烯酸
🧩 词语组成解析
🗣️ 情景例句
No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么，但几乎可以肯定这并非意外。
Almost everyone is aware of environmental problems in America.
在美国，几乎人人都注意到环境问题。
Thank you, sir.
谢谢，先生。