Oolith
n. [地]鲕粒(指构成鲕粒岩的基本粒子)
🗣️ 情景例句
Good afternoon, Mr. Chen. Thank you very much.
下午好，陈先生。非常感谢。
Good counsel never comes too late.
忠言绝不嫌迟。
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。