n. 时代;有时;总是;落后于时代;时间( time的名词复数 );时机;时代;所需时间;
prep. 乘,乘以;
🗣️ 情景例句
Don't be too sure.
别那么肯定。
First try, and then trust.
试了才能相信。
Professor Ronald Bracewell, a leading American radio astronomer,argued in Nature that such a superior civilization, on a visit to our own solar system,