Tcnb
[建] 四氧硝基苯
🗣️ 情景例句
You never know what you can do till you try.
除非尝试，否则你永远都不知道你有何价值。
Don't forget to write to me.
不要忘记写信给我。
The sun was shining and the sky was crystal clear.
阳光闪烁，天空湛蓝。