The anode rod should be removed from the water heater tank every 3 years for inspection.
每隔3年时间，就要把阳极棒从热水器内胆上拆卸下来进行检查。
If the rod is more than 50% depleted, the anode rod should be replaced.
如果阳极棒消耗超过50%，就应该更换阳极棒。
If the rod is more than 50% depleted, the anode rod should be replaced.
如果阳极棒消耗超过50%，就应该更换阳极棒。
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