Sinus coronarius
冠状窦
🧩 词语组成解析
n. 窦, 静脉窦, 凹陷处
冠状动脉的
🗣️ 情景例句
What time should I call back?
我应该何时再打来？
Art is long, but lift is short.
人生有涯，而学无涯。
and a very firm hand must be employed in the early stages.
因此开始阶段需要有一位强有力的老手。