The feed holes for the crankshaft main bearings.

曲轴主轴承进入口。

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Moth larvae, carpet beetles, and silverfish feed on the natural fabrics in your clothes, causing small holes or shreds.

蛾子的幼虫、地毯圆皮囊还有蠹虫是以衣服上的天然纤维为食的，造成衣服上的小洞或是部分衣服碎片。

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Violent galaxy mergers can feed supermassive black holes.

剧烈的星系合并能喂养超大质量黑洞。

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David Alexander told the UK Astronomy Meeting the collisions were probably providing the material to feed the holes and drive the birth of new stars.

BBC: NEWS | Science/Nature | Deepest X-rays tell merger story

Blazars are a special case of "active galaxies" - those whose supermassive black holes spray out great quantities of light across the whole electromagnetic spectrum as they feed on surrounding matter.

BBC: Blazar Markarian 421's flare-up is cosmic coincidence