I see three monkeys in the zoo.

我在动物园看见三只猴子。

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Three monkeys escaped from the zoo.

三个猴子从动物园里逃了出来。

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There are three monkeys in the boat.

在那只船上有三只猴子。

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The monkeys came from three different groups (it was difficult to find one large group) and had been raised in some degree of captivity.

ECONOMIST: Health indicators

When facing a "loss" either way, the monkeys preferred the chance of getting three half of the time--even though the expected payoff in all cases was the same.

FORBES: Magazine Article

At Corcovado you can find tapirs, jaguars, pumas, anteaters, two-toed and three-toed sloths, golden orb spiders, moon crabs, a diversification of monkeys (including all four types of Costa Rican monkeys, found only in Corcovado), crocodiles, poison dart frogs, pelicans, 220 species of butterflies, scarlet macaws and even the rare and venomous fer-de-lance snake.

FORBES: Take A Trip To The "Happiest Country On Earth"