Dimethacetic acid
[化] 二甲基乙酸
🧩 词语组成解析
🗣️ 情景例句
Challenge, the feeling of accomplishment, and knowing that you have made a contribution.
挑战，成就感和知道自己做出了贡献。
It is good to have friends in trouble.
在患难时得到朋友是幸运的。
Yes, I am, thank you.
是的，好些了，谢谢您。