During the summer months, 夏季的几个月里

114. are now full of life.
     现在生机勃勃
115. But in these mountains, the good times will not last long.
     但山峦之间 好时光不会太久
116. So the bears must feed as fast as they can.
     所以灰熊必须尽快进食
117. During the summer months,
     夏季的几个月里
118. an adult can put on 180 kilos gorging on plants
     一只成年灰熊靠吃植物能长一百八十公斤
119. and, if they can catch them...
     要是能再...
120. a marmot or two.
     逮几只土拨鼠就更好了

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 117 行