随着上班族驱车的离去，爷爷、奶奶、公公、婆婆、阿姨们带着还没有入托的宝宝们聚在儿童游乐场喜笑颜开。
O O B-Person I-Person I-Person O B-Thing O O O O B-Person I-Person O B-Person I-Person O B-Person I-Person O B-Person I-Person O B-Person I-Person I-Person O O O O O O O O B-Person I-Person I-Person O O B-Location I-Location I-Location I-Location I-Location O O O O O