Air is sucked in via tubes and wafted gently over the bees.

通过导管吸入的空气轻轻地飘荡在蜜蜂周围。

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"The fact is that of the 100 crop species that provide 90 percent of the world's food, over 70 are pollinated by bees," he added.

“事实上，一百种提供全球90%食物的作物中，七十种以上都是由蜜蜂来传粉的。”他补充道。

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Meanwhile, the recent high prices for pollination contracts made it look worthwhile fattening bees up with supplements over the winter.

同时，由于近期授粉合同价格的居高不下，使得在冬天为蜜蜂补充食物变得划算起来。

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Over the next two years, beekeepers lost more than one-third of their honey bees.

VOA: special.2009.09.22

Georgina Kemp, spokeswoman for Exosect, said that because the powder stuck to the bees it got spread all over the hive, including inside comb cells where bees develop.

BBC: NEWS | Science/Nature | Sticky bees combat insect pests

"One of the main reasons bumble bees have been declining over the last 70, 80 years has been changes in the landscape, " explains Dawn Ewing, outreach manager of the Bumblebee Conservation Trust.

BBC: Making a bee-line for city roofs

But by my reckoning, it's the stress that neither the bees nor the beekeepers have control over that is a major issue.

CNN: What's killing the bees