Richet's canal
[医] 里歇氏管(脐静脉管)
🧩 词语组成解析
🗣️ 情景例句
Good morning.
早安。
But last year we had a big one.
但去年下了大雪。
Every night, the man upstairs came back late.
每天晚上，楼上人回来很晚。