touchstone

1.they tend to regard grammar as the touchstone of all language performance.

他们往往把语法作为所有语言运用检验标准。

2.success, a touchstone of opportunity, ambition, and ability;

成功、野心和能力试金石；

3.A man’s deed is the touchstone of his greatness or littleness.

行动一个人伟大或者渺小试金石。

4.Toronto :Atheneum ;New York :Maxwell Macmillan Canada ;

Publication | 出版地/出版者/出版年 New York :Touchstone :1994.