regular brushing is the linchpin of all good dental hygiene.
经常刷是齿卫生的。
regular brushing is the linchpin of all good dental hygiene.
经常刷是齿卫生的。
Reduced spending is the linchpin of their economic program.
减支出是这个经济计划的
the linchpin upon which success or failure depends
成败的
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