单词：body condition
body condition的用法和样例：
例句
- The pigs are also leaner and since fat is an essential tissue for reproduction, care must be taken to conserve body tissue in breeding animals.猪也较以前瘦，但是因为脂肪是良好繁殖性能的一个必须组织，种猪必须给予精细的管理以保持良好的体况。
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