Italy has some of Europe's finest beaches but they are often buried under a mountain of deckchairs and umbrellas.

意大利拥有一些欧洲最好的海滩，但它们经常被埋在一堆帆布躺椅和雨伞下面。

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When experimental populations are set up under simple laboratory conditions, the predator often exterminates its prey and then becomes extinct itself, having nothing left to eat.

当实验种群在简单的实验室条件下建立起来时，捕食者往往会消灭它的猎物，然后自己也走向灭绝，因为没有东西可以吃。

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Even under drought conditions, trees can often provide food and a way to earn money until the next growing season.

VOA: special.2009.09.01

Fungi which don't often cause infections in people with healthy immune systems but can under some circumstances, and can be tremendous problems in patients that have weakened immune systems.

真菌在免疫系统健康的情况下通常,不引起感染,但在某些情况下也会感染,那就成了极大的问题,在免疫系统脆弱的病人体内

耶鲁公开课 - 生物医学工程探索课程节选

Very often, overpromising and under-delivering.

通常都言过其实，无法兑现。

哈佛公开课 - 幸福课课程节选

As a result, women-led companies are often overlooked and under-funded.

FORBES: Overcoming Bias: Simple Advice for Women Raising Money

It unnerves people, and as a result, they often under communicate and send inconsistent messages about the change, both of which lead directly to stalled transformation efforts.

FORBES: Think You're Communicating Enough? Think Again

In business, we often say it takes all kinds and I often watch how employees and colleagues react under adversity because it provides powerful clues to how they are wired to manage stressful situations, rejection and adversity.

FORBES: Change Your Thinking, Lower Your Stress