Well, for one thing, he's my sister's boyfriend. Ann talks about Jack all the time.
首先,他是我妹妹的男朋友。安整天就是杰克长杰克短的。
The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
事实上搜寻工作很困难,因为常常是早晨在甲地发现那只美洲狮,晚上却在20英里外的乙地发现它的踪迹。