zhè zhǒng / qǐ kǒu bǎn / ān zhuāng / qǐ lái / fēi cháng / fāng biàn / bù / xū yào / dīng zi这种企口板安装起来非常方便,不需要钉子。This kind of tongue-and-groove board is very easy to install and requires no nails.