not least because their stems just won't stay still. 主要是因为草茎不会静止不动
so their numbers grow rapidly just when grass is plentiful. 这样能够在草源充足时迅速繁衍
but in just a few months, all this fresh growth will be gone, 可再过几个月 这些青草就会消失
It'll be burnt off by the sun just hours after it rises. 太阳升起数小时后就会被烤干
Tackling it seems madness for a bat weighing just half an ounce. 捕捉毒蝎对于仅有十四克重的蝙蝠来说近乎疯狂
and right now, it has just detected its main course. 现在 它刚刚发现了自己的主菜
but just an inch beneath the surface of the sand, 但仅仅是沙子表面下几厘米处
and his prize is more than just the chance to drink. 他所获得的奖赏不只是可以喝水