Dinitromethane
二硝基甲烷
🗣️ 情景例句
Eleven o'clock, approve the sketches for the toy spaceship.
十一点钟， 批示玩具太空船的草图。
At 6 o'clock sharp.
6点。
Our TV set was broken last week. He mended it for us.
上星期我们的电视机坏了。他为我们修好了。