Obser
abbr. observant 严格遵守…的
🗣️ 情景例句
The advanced class is nonstop.
高级课程， 是没有休息的。
In good years corn is hay, in ill years straw is corn.
丰年五谷贱如草，荒年稻草贵如粮。
One Saturday morning, Frank visited an antique shop in my neighbourhood.
一个星期六的上午，弗兰克去了我家附近的一家古玩店。