形容词
中文翻译：光滑的
同义词：
['fine', 'smooth', 'even', 'fluent', "unobstructed例句：1. The car's engine is smooth and quiet.（这辆车的引擎很平滑，噪音很小。）2. The road was smooth as glass.（路像玻璃一样平滑。）"]
例句：
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1. The car's engine is smooth and quiet.
这辆车的引擎很平滑，噪音很小。
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2. The road was smooth as glass.
路像玻璃一样平滑。
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3. She smoothed the fabric with her hands.
她用手把布料弄平了。