Serious defect, bad resistance form and retention form.
牙体缺损范围大，残留牙体组织抗力形差，固位不良者。
Speedreading courses preach a form of skimming that doesnt help comprehension or retention.
快速阅读课程所教授的技巧不能帮助理解和记忆。
Whereas, retention of water may form such pathological substances as water, dampness and phlegm retention.
而水液储留可以由如停滞得水湿痰饮得病理物质引起。
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