Tonsillolith
[医] 扁桃体石
🗣️ 情景例句
The welcome sign is up:
欢迎的标语已经弄好了：
He is playing on the merry-go-round in the park.
他正在公园里骑旋木马。
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!
因此，从月球到地球的25万英里所消耗的能量要比从地球表面进入地球轨道的200英里所耗能量少97%。