和訳してください(+_+)
However, explains Pettis, bees are hard to study.
Most die away from the hive, so researchers don't have dead bodies to examine.
And when researchers return to a hive after two weeks, about half the bees they studied on their first visit will be dead, replaced by new ones in the natural life cycle of bees.
Making detective work even harder, these busy insects fly up to two miles away from their hive in search of pollen and nectar from flowers.
So when bees pick up diseases or get exposed to poisons in their environment, it is hard to know exactly where that happened.
"It isn't like studying a large animal like a cow that doesn't move around much and is easy to find out in the cow field," says Pettis.
Researchers do have some ideas about what could be affecting bee health.
They could be sick from poisons widely used to kill insects, or they might not be getting enough good food to stay strong.
Aloso, tiny insects called mites feed on bees.
"Any or all of these things could be weakening the honey bees," explains Pettis, "and then a virus or bacteria could be doing the killing."
Pettis is hoping for a solution, because bees are so important.
"Here's a good example of what pollinators like bees give us," he says.
"You can eat plain oatmeal every day and get by, and oats are pollinated by the wind.
But if you want to add some blueberries or strawberries or nuts to your daily oatmeal, those are the things you have to thank pollinators for.
Bees are worth protecting because their work adds so much to our diet."
お礼
ご回答ありがとうございました！ そうですか。有名なことわざではないんですね。 もう少し頭をひねってみます。