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。

youdao

Use a wire sling of a greater S. W. L whenever the exact weight of 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。

youdao

A. Weight and quality unknown, Numbers of package unknown as per shore tally, separated by shippers.

重量和质量不详，件货数字根据岸上理货，发货人隔票。

youdao

"Runners usually fatigue late in the last six miles of the marathon, and when you are carrying weight it is more of a step into the unknown, but I am confident I will come in at under three hours and a half and beat the record, " said Mr Ellicock.

BBC: London Marathon: Ex-paratrooper runs for record

The Zumwalt has the power, cooling, space and weight margin designed to meet the full spectrum of future threats, both known and unknown.

CENTERFORSECURITYPOLICY: Countering Beijing's new weapon

At the time the FDA said the drug resulted in "significant" weight loss but the agency said it was concerned about a possible risk of birth defects and an unknown impact on the heart.

WSJ: Federal Panel Approves Weight-Loss Drug Qnexa