🧩 词语组成解析
n. 痣\\n[医] 痣
🗣️ 情景例句
John is tied up at the present time.
John现在有事。
Please be reasonable.
请别做无理的要求。
riding on its air cushion over a single rail, which it never touches,at speeds up to 300 m.p.h.----the possibilities appear unlimited.
靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。气垫船的前途是不可限量的。