Extremely long oil cycle, service life is 6 ~ 8 times mineral oil.
极长的换油周期，使用寿命是矿物油的6~8倍。
Their life was extremely circumscribed , with long hours of study and few of play.
由于长时间的学习和很少玩耍，他们的生活范围太局限局限了。
Their life was extremely circumscribed , with long hours of study and few of play.
由于长时间的学习和很少玩耍，他们的生活范围太局限局限了。
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