Diethylidene
[化] 二亚乙基; 2-丁烯
🗣️ 情景例句
Tom is studying photography at NYU. Tom
正在NYU学摄影。
Children enter school at the age of five,don't they?
孩子们在5岁时入学吗？
In his own lifetime Galileo was the centre of violent controversy;
伽利略在世时是激烈论战的中心。