3.On average, dogs with the POMC mutation spent almost twice as long looking at, or—for whatever reason—playing with, the tantalising box than did those without.
平均而言,具有 POMC 突变的狗注
或(无论出于什么原因)玩弄诱人的盒子的时间比未具有 POMC 突变的狗几乎长
倍。机翻
「经济学人 Science and technology」评价该例句:好评差评指正