Almost all the oxygen in water is oxygen 16, but a few molecules out of every thousand incorporate the heavier isotope 18.

水中几乎所有的氧都是氧16，但每一千个分子中就有几个含有较重的同位素18。

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During glaciations, the lighter oxygen-16 has a greater tendency to evaporate from the ocean surface than the heavier oxygen-18 does.

在冰川期，较轻的氧-16比较重的氧-18更容易从海洋表面蒸发。

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This is the heavier of the two.

这是两个中较重的一个。

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Mister Wegener said the lighter continental rock floated up through the heavier basalt rock of the ocean floor.

VOA: special.2010.01.12

So here is a list of size 2, this is the light one, this is the heavier one.

这是有2个元素的一个序列，这杯轻一些，这杯重一些。

哈佛公开课 - 计算机科学课程节选

The heavier a person is the more likely they are to die of cardiovascular disease.

人越胖,死于心血管疾病的风险越高

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The heavier burden of debt-servicing costs will constrain consumer budgets over the next year or so.

ECONOMIST: Economic prospects

He's a great fighter, but he's a welterweight who got exposed at the heavier weights.

BBC: Hopkins just too old - Calzaghe

The burden is the heavier because parts firms have not followed car makers overseas.

ECONOMIST: Small Japanese companies