名词
中文翻译:外部标记
同义词:
['outer boundary', 'outer layer例句:1. The outer mark of the city is the river.(城市的外围是河流。)']
例句:
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1. The outer mark of the city is the river.
城市的外围是河流。
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2.The outer mark of the forest is the tall trees.
森林的外围是高大的树木。
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3.The outer mark of the car is the paint and chrome.
汽车的外围是油漆和铬。