A trough or channel for carrying something off, such as that on either side of a bowling alley.
A trough or channel for carrying something off, such as that on either side of a bowling alley.
沟槽把某物排走的槽或沟，比如在保龄球道两边的球槽
A trough or channel for carrying something off, such as that on either side of a bowling alley.
沟槽把某物排走的槽或沟，比如在保龄球道两边的球槽