栅栏至少有9英尺高，几乎有半个街区长。
The fence is at least nine feet high and runs nearly half the block long.
当警察走了半个街区，突然放慢了脚步。
When about midway of a certain block the policeman suddenly slowed his walk.
福塞特学技巧就像婴儿学步，开家庭汽车只小心地开半个街区，从不直冲上高速路；
He learned that skill as a toddler, driving the family caronly a careful half-a-block rather than heading for the highway;
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