"You have to choose between breakfast and lunch because you can only eat so much at a time."

“你必须在早餐和午餐间做抉择，因为你一次只能吃那么多。”

The study found that during the unusually warm summer of 2017, the bears, which would traditionally kill up to 75 percent of the salmon, were nowhere to be seen near the streams.

研究发现，在2017年，夏季异常温暖，但流水旁却不见灰熊的踪影。照往常来说，它们这时候可要吃掉高达75%的鲑鱼。

Instead, they were in the hills busy munching on berries, which contain less protein and therefore take less energy to break down, causing them to gain weight more quickly.

但是，它们一反常态，跑到山上大吃浆果。浆果里面的蛋白质含量低，消化分解所需能量少，因此它们长胖的速度也加快了。

Biologists warned that changes caused by a warming planet were behind the bears' unusual behavior and could affect the entire ecosystem.

生物学家们警告称，灰熊不寻常的行为背后反映的是全球变暖所带来的变化，可能会影响整个生态系统。

The researchers found that the forests around the streams suffered because the bears’ fish carcasses were no longer there to enrich the soil.

研究人员发现，没有灰熊吃剩的鱼骸来给土壤增肥，河流周围的森林已经受到了影响。

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