翻孔

wet hole【地质】

macular hole

like a rat in a hole

air hole【机】;air-breather【机】;airflow orifice【机】

aperture size【矿】;dimension of screen hole【油气】;mesh size【粮食】

via hole【电】

bar screen (grizzly screen), clotted hole screen (needle slot screen)

plug-and-feather hole【矿】