What's the weight limit?

重量限制是多少？

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Most scientists agree a Type 1a supernova occurs when a White Dwarf star — a collapsed remnant of an elderly star — exceeds its weight limit, becomes unstable and explodes.

大多数科学家认为，当白矮星(年老恒星坍缩而成的残骸)超过质量极限，变得不稳定并爆发的时候，会产生Ia型超新星。

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Overall, 20 percent of the women in the study who gained more than 40 pounds — the upper limit of pregnancy weight gain recommendations in the United States — gave birth to heavy babies.

总体来看，在孕期体重增幅超过40磅的女性中，有20%的人生下了超重婴儿。在美国，孕期增重建议最高上限为40磅。

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All models were required to have a body mass index -- a ratio of height and weight -- above 18, the minimum limit considered healthy by the World Health Organization.

CNN: Young models dying to be skinny

Louis, was supposed to be making his first defense of his title, but Purdy (20-4-1, 13 KOs) failed to make the 147-pound weight limit.

WSJ: Devon Alexander tops Lee Purdy in non-title bout

Bath and North East Somerset Council wanted the A36 taken out of the national road network so it could impose an 18-tonne weight limit.

BBC: Bath loses fight to ban lorries from Cleveland Bridge