弗恩拿来一瓶牛奶，在苹果树下的猪栏里坐下来。
Carrying a bottle of milk, Fern sat down under the apple tree inside the yard.
扎克曼先生到了猪栏边，跨过围栏，把泔水倒进食槽。
When Mr. Zuckerman reached the pigpen, he climbed over the fence and poured the slops into the trough.
但是，一般来讲，群养母猪栏舍可以分为全开放式和部分限位式。
However, in general, group sow housing can be divided into either fully open or partial stall access.
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