如果有必要,我可以每隔几个月回家一次。
每隔几个月,我就能听到远处海上驳船经过的声音。
Every few months, I can hear the sound of an ocean barge passing in the distance.
一旦你得到了正确的安全工具并制定了正确的计划,请每隔几个月练习一次。
Once you have got the correct safety tools and worked out the right plan, practice every few months.
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