?Casually是一個副詞，意思是隨意地，不經(jīng)意地，漫不經(jīng)心地。它可以用來描述一種輕松的態(tài)度或者無拘束的表現(xiàn)。

用法：

Casually可以作為一個副詞，放在動詞之后，也可以放在句子的結(jié)尾。它可以修飾動詞，形容詞或者其他副詞。

例句1-5句且中英對照：

1. She was dressed casually for the party. 她穿著隨意參加聚會。

2. He casually mentioned that he was leaving town next week. 他隨口提到他下周要離開城市。

3. They were chatting casually over a cup of coffee. 他們邊喝咖啡邊隨意聊天。

4. The cat stretched out on the couch, looking very casual and relaxed. 貓舒服地躺在沙發(fā)上，看起來很隨意和放松。

5. She spoke casually about her upcoming trip to Europe. 她隨便談?wù)撍磳⒌綒W洲旅行的事情。

同義詞及用法：

1. Informally - 非正式地，不拘束地。：They chatted informally over a cup of tea.

2. Nonchalantly - 漠不關(guān)心地，冷淡地。：He nonchalantly mentioned his resignation from the company.

3. Indifferently - 漠然地，冷漠地。：She shrugged her shoulders indifferently.

4. Laid-back - 悠閑的，輕松的。：He has a laid-back attitude towards life.

5. Unconcernedly - 漠不關(guān)心地，無動于衷地。：She walked away unconcernedly, not caring about the argument.