Septennial
a. 延续七年的, 每七年一次的
🗣️ 情景例句
His concert brought the house down.
他的音乐会博得满堂彩。
I often brush my teeth in the morning.
我常常在早上刷牙。
He did not marry again and I was brought up without a woman's care;
父亲没有再娶，因此，我在没有母亲的环境里长大成人。