maintenance free

基本解释

"In any case, we assume we will be using nearly maintenance-free engines by 2050, " Krein explains.
“届时到2050年我们假设将使用免维护的发动机”Krein解释说。
Other than putting in new paper and changing the ink cartridge (only once, I think), it’s a maintenance-free dinosaur that we have no intention of tossing out anytime soon.
除了装纸和换墨盒(我想只有一次)，这是一条不需维护的恐龙，我们不打算丢掉它。
The sealed spherical roller bearings are protected against both particle and moisture contamination, enabling them to offer effective performance over long, virtually maintenance-free service lives.
这个密封的球面滚子轴承的保护，以防止颗粒和水分的污染，使他们能够提供有效的长期业绩，几乎免维修服务的生命。

His maintenance-free bike uses a "secret" mix of organic materials to make it waterproof and fireproof, and is then lacquered to give it a friendlier appearance.
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This helps it land at No. 2 on the list, despite BMW's fairly comprehensive free scheduled-maintenance program for all models.
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To allay concerns about reliability--Fiats still rank near the bottom of owner-satisfaction surveys in Europe, and "Fix It Again Tony" remains lodged in the memory of potential American buyers--Fiat has included a 50, 000-mile warranty on the 500 and free maintenance for three years.
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