These bags aren't heavy. They are light bags.

这些包不重，它们是轻的包。

youdao

The doctor advised that he should change the heavy shoes for light ones.

医生建议他把重的鞋换成轻的鞋。

youdao

We used to mistake that heavy objects fell faster than light ones.

我们过去错误地认为重的物体比轻的物体下落更快。

youdao

Thick walls are extremely heavy, and allow less room for windows and light.

VOA: special.2010.03.31

At the bottom of the light house was big heavy rocks.

VOA: special.2010.05.08

Batteries are bulky and heavy, and for machines that need to be light.

VOA: standard.2010.08.11

The Belfast boxer previously moved up from super middleweight to light heavy after his bruising Commonwealth title defeat by Carl Froch last year.

BBC: Magee to fight Oakey in Belfast

Then we have Brazil, with first quarter sales of cars and light and heavy commercial vehicles up 4.7%, to 852, 000.

FORBES: Auto Sales Burgeoning World Wide

Walking the line between light and heavy, the meal satisfied with the mix of robust (lamb belly) and subtle (turnip soup) flavors.

FORBES: An Inside Look At Wolfgang Puck's New Restaurant At Hotel Bel-Air