Try to avoid retinol, retinyl palmitate and retinyl acetate, which may increase the risk of hip fracture and certain birth defects when taken at levels exceeding 10,000 IUs.
尽量避免retinol，retinyl palmitate 
retinyl acetate，当服用水平超过10，000 IUs时，可能会增加髋骨骨折
某些先天缺陷的风险。
明：以
例句、词性分类
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