名词
中文翻译：障碍
同义词：
['block', 'hindrance', 'impediment例句：1. The path was blocked by a fallen tree.（一条小路被倒下的树挡住了。）']
例句：
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1. The path was blocked by a fallen tree.
一条小路被倒下的树挡住了。
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2. The road was obstructed by the construction site.
道路被工地阻挡了。
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3. The project encountered numerous obstacles during its implementation.
该项目在实施过程中遇到了许多障碍。