户外一片灰暗，天空低低的，好像要贴到屋顶上。一会儿前还鸟雀喧嚷的老榆树上只剩下零落的声音。
Why is it always at dusk when we head to the grocery?It is gray outside and the sky is so low that it seems to be touching the roof.The old elm tree, where the birds had been clamoring a while ago, is now left with only fitful sounds.