My brother is much heavier than me.

我弟弟比我重得多。

《牛津词典》

Which is heavier, water or oil?

水重还是油重？

youdao

My friend is heavier than Tom.

我的朋友比汤姆更重。

youdao

If the grass was good, and the herd moved slowly, the cattle would get heavier and bring more money.

VOA: special.2010.03.18

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

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

He says the workloads in those two circuits are much heavier than in Washington.

NPR: AP Source: Obama Nominating 3 To US Appeals Court

They both won, but the structure, and therefore the car, is heavier because of it.

FORBES: Cars

By contrast, the evidence of the Tokyo-Osaka route is of continuing, ever heavier industrial investment.

FORBES: A Curve Ball for the Candidates As They Prepare To Debate China