keystones例句

The Work Deletion and Keystones of Short Message Chicane Casesin Our Country.
我国应对短信诈骗案件的工作缺失及重点.

The visibility of tracks in these tiny keystones is superb ( see picture below ).
这些小楔石中的轨迹其可视性非常的好.

Perfect our speech is one of the keystones of an authentic spiritual program.
改善我们说话的能力是一项实实在在的基本心灵课程.

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