英语语法分析

This festival takes places biennially .

这个节日每两年有一次。

This occurs biennially, as in many fruit trees.

象多种果树那样二年发生一次。

Expert proposal pillow core at least biennially is changed bask in every week.

专家建议，枕芯至少每两年换一次，每周都晒一次。