走廊里回荡着十几条狗的吠声。
一条老狗的吠声传来,狗拴在那棵悬铃木上。
She heard the barking of an old dog that was chained to the sycamore tree.
然而,Doug的Dog Doors出现另一个问题,当所有狗叫时,吠声识别器都把狗门打开。
However, there's another problem with Doug's dog Doors; the bark recognizer opens the dog door when ANY dog barks.
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