You only have to look at her to see she doesn't eat enough.

你只消看一眼就知道她进食不够多。

《牛津词典》

Most Americans don't eat enough fruits, vegetables or whole grains.

大多数美国人没有吃足够的水果、蔬菜或全谷物。

youdao

There are many people who do not eat enough right food.

有许多人没有吃足够的正确的食物。

youdao

So how could dinosaurs have been able to eat enough to stay alive?

VOA: special.2010.06.04

- If you eat these raw, which they do in many places around the world, if you eat a bitter one, you could, in fact, get enough cyanide to kill you.

如果你生吃它们的话，它们在世界上的很多地方都存在，如果你吃了一个苦的根，可能，实际上，它所含的氰化物的量足以令你死亡。

麻省理工公开课 - 化学原理课程节选

Now, most of you will say someone that wealthy surely we can tax them to meet the pressing needs of people who lack in education or lack enough to eat or lack decent housing.

你们很多人会说,这么有钱的人，我们当然可以向他收税,以满足那些得不到教育,缺乏食物或者无家可归者的迫切需求。

耶鲁公开课 - 公正课程节选

Mold can be deadly--if you eat enough of it or if your immune system is compromised.

FORBES: Science Versus Hysteria

To combat this, scientists recommend that pregnant women ensure that they eat enough calcium-rich foods like milk, or else take supplements.

CNN: Calcium for Moms-to-Be

They both eat very little, suffer from reflux and regularly vomit - but if they don't eat enough they become tired and irritable.

BBC: 'No-one had heard of my boys' syndrome'