regular brushing is the linchpin of all good dental hygiene.
经常刷牙是保持牙齿卫的关键。
regular brushing is the linchpin of all good dental hygiene.
经常刷牙是保持牙齿卫的关键。
Reduced spending is the linchpin of their economic program.
减出是这个经济计划的关键
the linchpin upon which success or failure depends
成败的关键
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