Exradius
外径, 旁切圆直径
🗣️ 情景例句
You remember that day, Robbie?
你还记得那天吗 Robbie
The falling out of lovers is the renewing of love.
情人越吵越亲密。
There has long been a superstition among mariners that porpoises will save drowning men by pushing them to the surface, or protect them from sharks by surrounding them in defensive formation.
长期以来，海员中流传着一种迷信的说法，认为海豚会把快要淹死的人托到水面，救人性命；或在人们周围列队保护，使他们免遭鲨鱼伤害。