The study concluded that "the mechanism of this weight loss is unknown [but] it would appear reasonable to include grapefruit in a weight reduction diet."
研究得出结论是这种减轻体重的机制还未知道，但相信包括葡萄柚等类似的减肥饮食的合理原因会浮出水面的。
2
Use a wire sling of a greater S. W. L whenever the exact weightof the load is unknown or there is a hazard to personnel.
当无法确定载荷的准确重量或对人员存在危险时，使用大于安全工作负荷的钢丝绳。
3
A. Weight and quality unknown, Numbers of package unknown as per shore tally, separated by shippers.