Sentinel pile
[医] 前哨痔(肛裂下端的痔)
🧩 词语组成解析
sentinel
['sentinl]
n. 岗哨，哨兵;
🗣️ 情景例句
Uh, one scoop of coffee and one scoop of chocolate for me.
我要一勺咖啡的和一勺巧克力的。
I can't tell.
我说不准。
Bleriot set off half an hour later.
半小时后便正式出发了。