I reckoned it was a) 280 kg.

我猜测是a) 280千克。

Because inside, there are 100kg of plutonium.

因为石棺内有100公斤钸。

I've lost 7 kg in the last two months.

这两个月我已经减掉了7公斤。

Typical weight loss after a year is barely over 5 kg.

一般一年减重不超过5公斤。

In that time, we've collected and saved 1.3kg of dust.

在这期间，我们收集并保存了 1.3 公斤灰尘。

She had no jaw weighed only 1.3 kg and couldn't eat or drink.

她没有下巴，体重只有1.3公斤，不能吃也不能喝。

The Finns on average get through an amazing 12kg of coffee a year, each.

芬兰人平均每人每年要消费12千克咖啡，很惊人。

It costs about $10,000 to transport 0.45kg of materials from Earth to the Moon.

把0.45公斤材料从地球运到月球大约需要1万美元。

Okay, so he said that it might take me two months to lose ten kgs.

他说可能需要两个月才能减掉10公斤。

This means if you weigh 70kg you would require 14,000mg of caffeine to overdose.

也就是说，如果你体重是70公斤，那14000毫克咖啡因就算过量。

After two months diligently following the program, Yao lost about 14 kg.

经过两个月，他减掉了14公斤。

Zuckerberg, 39, has a height of 1.71 meters (5ft 7ins) and weighs about 70kg (11st).

现年 39 岁扎克伯格身高 1.71 米，体重 70 公斤。

But to make 1kg of crickets?

那生产1kg蟋蟀呢？

Modern plastics are so strong that a 60 gram jug can carry 4 kg of milk.

现代塑料非常牢固，一个 60 克塑料罐可以装 4 公斤牛奶。

If you have only got 4kg of overweight baggage, it can be checked free of charge.

如果您只超重了4公斤，能免费托运。

It weighs in at 3080 kg.

它重量为 3080 公斤。

It takes 15,000 liters (3,962 gallons) of water to produce just 1 kg (2.2 lbs) of beef.

仅生产一公斤牛肉就需要 1.5 万升水。

About 2 kg of samples are expected to be collected.

预计这次任务将采集约两公斤样本。

To answer that, consider the plight of the Bully xl, a pooch that can grow to be 60kg.

要回答这个问题，请考虑一下大型恶霸犬(一种可以长到60公斤重狗)困境。

And speaking of bizarre, the largest hailstone ever found measured in at roughly 20 cm, weighing almost 1 kg.

说到离奇，目前发现最大冰雹大约20cm，重量近1公斤。