n. 时期;(一段)时间;学时;句号;
adj. 具有某个时代特征的;(关于)过去某一特定历史时期的;(家具、服饰、建筑等)某一时代的;
peri周围,靠近+od道路→周期
🗣️ 情景例句
Do you fancy the Back Street Boys?
你喜欢“后街男孩”吗?
Could you say it again?
你能再说一遍吗?
Professor Ronald Bracewell, a leading American radio astronomer,argued in Nature that such a superior civilization, on a visit to our own solar system,