Flat torus
[医] 平隆凸
🧩 词语组成解析
flat
[flæt]
adj. 平的;单调的;不景气的;干脆的;
adv. （尤指贴着另一表面）平直地;断然地;水平地;直接地，完全地;
n. 平地;公寓;平面;
vt. 使变平;[音乐]使（音调）下降，尤指降半音;
vi. 逐渐变平;[音乐]以降调唱（或奏）;
n. 花托, 隆凸, 环面\\n[化] 螺绕环
🗣️ 情景例句
He's a little quiet.
他有点沉静。
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
For a few hours, you settle back in a deep armchair to enjoy the flight.
几小时之内，你躺在扶手椅上，享受着旅途的欢乐。