形容词
中文翻译：挺直的
同义词：
['tall', 'erect', 'upright']
例句：
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1. The tree is so tall that it can be seen from the top of the hill.
这棵树很高，可以从山顶看到它。
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2. The mountain was so upright that it seemed to touch the sky.
这座山非常直，好像要触碰到天空。
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3. The flag stood tall and proud in the wind.
旗帜在风中矗立着，显得骄傲而自豪。