Spaceflight
n. 外层空间飞行
🗣️ 情景例句
What time?
什么时候
Please bring me those magazines.
请带给我那些杂志。
But having satisfied the requirements of practical necessity, most people go no further.
但是，大部分人在满足了实际需要后，就不再继续发展这种能力了。