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's been another scandal in the Royal family.
皇室又出丑闻了。
A secret between more than two is no secret.
两人以上知道的秘密就不算秘密。
The man who had fixed up the air-line was also questioned.
安装供气管的那位工人也被提问。