Retroflexion
n. 反折, 翻转, 子宫后屈\\n[医] 后屈
✅ 同义词
🗣️ 情景例句
I work part time in the summer to pay for my tuition.
我夏天做兼职来支付学费。
Who is the leader of this political party?
谁是这政党的首领？
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。