有人一度写信给我的母亲，告诉她我的工作，她很骄傲，但是不清楚为何我会被称之为“残忍的人”。
Someone once sent my mom an article about my work. She was proud and everything but wanted to know why her baby was described as "ferocious."
像阿莱格罗和莫里斯·玛丽娜那样的英国汽车，在人们的记忆中一度被称之为车轮上的跳板，现在成为了那个愚昧时代国耻的象征。
British cars like the Allegro and the Morris Marina, once memorably described as a skip on wheels, have come to embody the national humiliation of that benighted era.
数十年来，天文学家们一度怀疑一种更寂静的恒星爆炸的存在——称之为“对不稳定”超新星，其能量超过普通超新星100倍。
For decades astronomers have suspected the existence of a type of stellar explosion that is bigger still-a "pair-instability" supernova, with 100 times more energy than an ordinary supernova.
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