Seven sisters
七姊妹（世界七大石油公司）；北斗星团
🧩 词语组成解析
seven
['sɛvn]
num. 七;七个;第七;
n. 七;七个;
n. 姐妹们（sister的复数形式）
🗣️ 情景例句
There are many natural catastroophes occurring in nature.
自然界里有很多自然灾害发生。
Recently, I have learned a lot of new things about myself.
最近，我学到了许多自己以前不明白的事理。
acquired this man-made disease as a pestilence.
而欧洲自己却染上了这种人为的瘟疫般的疾病。