Icosane
二十碳烷
🗣️ 情景例句
I would like to make an appointment for a hairdo, please.
我想预约理发， 劳驾。
When did you join the oranizetion?
你什么时候加入这个团体的？
engineers may soon be free to let their imaginations soar without being penalized by expensive failures.
因此，工程技术人员可能很块就可充分发挥他们的想像力，而不会因失败而造成经济上的损失。