regular brushing is the linchpin of all good dental hygiene.
经常刷牙是保持牙齿卫生。
regular brushing is the linchpin of all good dental hygiene.
经常刷牙是保持牙齿卫生。
Reduced spending is the linchpin of their economic program.
减支出是这个经济计
the linchpin upon which success or failure depends
成败
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