cliff
an area of rock that is high above the ground with a very steep side, often at the edge of the sea
悬崖
[名词]
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登录metal
a usually solid and hard substance that heat and electricity can move through, such as gold, iron, etc.
金属
[名词]
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登录rock
a solid material forming part of the earth's surface, often made of one or more minerals
岩石
[名词]
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登录photograph
a special kind of picture that is made using a camera in order to make memories, create art, etc.
照片
[名词]
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登录to make
to form, produce, or prepare something, by putting parts together or by combining materials
做
[动词]
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登录research
a careful and systematic study of a subject to discover new facts or information about it
研究
[名词]
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登录announcement
an official or public statement that contains information about something, particularly a present or future occurrence
公告
[名词]
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