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3Ps: purity（纯正）, perscicuity（清晰） and precision（精确）
"purity, perspicuity and precision are the three essentials of the English language."
How To Speak and Write Correctly (2) - Chapter 1
美语世界 (2015-10-24 11:27:31) 评论 (0)http://bbs.wenxuecity.com/mysj/205740.html
3Ps: purity（纯正）, perscicuity（清晰） and precision（精确）
"purity, perspicuity and precision are the three essentials of the English language."