Pseudobutylene
2-丁烯
🗣️ 情景例句
He lost his money due to his own carelessness.
由于大意，他丢了钱。
A hasty man is seldom out of trouble.
性急难免出岔子。
To his astonishment, the bee began to perform a dance on the surface of the honeycomb.
冯·弗里施就透过玻璃进行观察。