1.perpetual adj. 不間斷的；持續(xù)的；長久的；無盡無休的；沒完沒了的
例句：I thought her perpetual complaints were going to prove too much for me.
我想我再也受不了她無休無止的抱怨了。
2.perish v. 毀滅；死亡；喪生
例句：A family of four perished in the fire.
一家四口死于此次火災(zāi)之中。
例句：This system sets the pattern for others to follow.
這個系統(tǒng)堪為他人仿效的典范。
例句：She made periodical visits to her dentist.
她定期去看牙醫(yī)。
例句：He held a great number of patents for his many innovations.
他擁有多項發(fā)明的專利權(quán)。
