Staurane
十二氢戊搭烯并戊搭烯
🗣️ 情景例句
He's not making much progress with his English.
他的英语进步不大。
A bargain is a bargain.
达成的协议不可撕毁。
His bike hit the bag of rice and he fell off.
他的车撞到大米上，他摔了下来。