Terracing
[医] 多层缝术
🗣️ 情景例句
Do you understand?
你明白吗？
Seriously, thank you all for coming and taking part in our camp.
说真的，谢谢你们来加入我们的野营。
It comes nearer to the engines with which man has 'conquered' the air, as he boasts.
它更近乎于人类自夸的“征服”了空气的发动机。