The latest version can even top up its batteries with solar power, or send its owner a text message if it gets into trouble trying to climb a mole-hill.
最新的版本甚至还能利用太阳能充电；要是割草时，它在卡在鼹鼠丘上不能动了，它还能给主人发短信求救。
Dr Hill herself spent years trying to work out how prairie mole crickets, a highly territorial species of burrowing insect, manage to space themselves out underground.
希尔博士本人用了数年的时间，希望搞明白牧场蟋蟀这种领地特征明显的穴居昆虫是如何在地下划分领地的。
Dr Hill herself spent years trying to work out how prairie mole crickets, a highly territorial species of burrowing insect, manage to space themselves out underground.
希尔博士本人用了数年的时间，希望搞明白牧场蟋蟀这种领地特征明显的穴居昆虫是如何在地下划分领地的。
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