The square was a sea of people.

广场上人山人海。

《新英汉大辞典》

At dawn I looked out the window to a sea of people gathered around the house.

拂晓时，我眺望窗外，看到房子外面围了很多人。

youdao

Stop at a zebra crossing for pedestrians and you could wait endlessly for the sea of people to part.

你要是在斑马线前停车等待行人穿过，这下可好，只见行人络绎不绝，你就没完没了地耗下去吧。

youdao

In Brazil,many people flock to Copacabana beach to ask the Afro-Brazilian goddess of the sea, Iemanja,a wish in exchange for a gift.

VOA: standard.2010.01.01

Remember Egypt had control of this area but their grasp was weakening with the flood of people coming in from the sea and other migrations Their hold was weakening and the Hebrews would have been able to take advantage of that and enter in and occupy areas in the central highlands.

记住埃及曾控制这一地区但是它的控制逐渐削弱,由于人们从海上涌入及来其他地方的移民,他们的控制逐渐削弱,希伯来人将会利用这一点,他们进入并且占领了中央的高地。

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The bear he says brings that message home. "It gives people an opportunity to connect with literally the processes that are going on up on the sea ice of the Arctic Ocean around the North Pole which is melting,"

VOA: standard.2009.12.13

As we made our way through the sea of people, the dancing and shots continued.

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Prepare: Aimlessly meandering through a sea of people usually nets very few meaningful interactions.

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As I exited the building I recall a dense sea of people drifting up 1st Ave.

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