名词
中文翻译：腰椎
同义词：
['lumbar spine', 'vertebral column例句：1. He sat on the couch with his back against the wall.（他坐在沙发上，背靠着墙。）']
例句：
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1. He sat on the couch with his back against the wall.
他坐在沙发上，背靠着墙。
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2. The doctor advised him to stay off his lumbar for a week.
医生建议他休息一周。
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3.She lifted her lumbar and stretched her arms out.
她挺直了腰，伸展开双臂。