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The transport of fat from the gastrointestinal tract is the principal function of this system.
运输胃肠道的脂肪物质是这个系统最主要的功能。
youdao
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We must keep tract of the current educational system.
我们必须注意当前的教育制。
youdao
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We must keep tract of the current educational system.
我们必须注意当前的教育制。
youdao