| 单词 | ball bearing |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔ballpoint pen〕A pen having as its writing point a small ball bearing that transfers ink stored in a cartridge onto a writing surface.圆珠笔：有一小滚珠做为书写点的笔，可将贮存于笔管中的墨水传送到书写面上美国传统〔ballpoint〕A pen having as its writing point a small ball bearing that transfers ink stored in a cartridge onto a writing surface.圆珠尖,球尖：有一小滚珠做为书写点的笔，可将贮存于笔管中的墨水传送到书写面上美国传统〔grease〕You'll have to put some grease on those ball bearings.你得往滚珠轴承上涂些油。剑桥高阶You'll have to put some grease on those ball bearings.你得在那些滚珠轴承上涂些滑脂。剑桥国际 |
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