名词
中文翻译：凸起的底部
同义词：
['bump', 'bumper', 'raised bottom']
例句：
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1.The car had a pushed-up bottom that made it difficult to drive.
这辆车有一个凸起的底部，使得驾驶变得困难。
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2.The boat's pushed-up bottom was designed to provide extra stability.
船的凸起底部设计是为了提供额外的稳定性。
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3. The new model has a pushed-up bottom that is more comfortable for passengers.
新款模型有一个凸起的底部，对乘客来说更加舒适。