Red flag
红旗
📖 牛津释义
red flag
1 flag used as a symbol of danger, eg on roads, railways, etc （表示危险的）红色信号旗（如用於公路、 铁路等）.
2 symbol of revolution or communism （象徵革命或共产主义的）红旗.
🧩 词语组成解析
red
[red]
adj. 红色的;（脸）涨红的;烧红的;红头发的;
n. 红色;红衣服;红颜料;红葡萄酒;
flag
[flæg]
n. 旗;旗帜;信号旗;菖蒲;
vt. 标示;
vi. 疲乏，变弱，热情衰减;
🗣️ 情景例句
The weather really sucks today.
今天的天气真差。
He who would search for pearls must dive below(or deep).
欲寻珍珠，须潜水下。
Such an experience befell a certain young girl the first time she was traveling alone.
一个小姑娘第一次单独出门就碰到了这种情况。