久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

Examples include outdoor perimeters , traffic monitoring, tunnels, and car parks.例子像戶(hù)外圍墻; 交通監(jiān)視; 隧道和停車(chē)場(chǎng)....

n.周邊( perimeter的名詞復(fù)數(shù) )，周?chē)?，邊緣，周長(zhǎng)...

perimeters的音標(biāo)：...