在适当的时间喝适量的咖啡。
关键在于要摄入适当的脂肪，饮酒也要适量。
The trick is to have the right kinds of fats and to drink alcohol in moderation.
在混凝土中加入适当且适量的混凝土外加剂，能使其具有良好的性能，从而满足工工艺的要求。
When concrete is mixed with appropriate admixtures, its material properties can be good enough to meet the demands of construction technology.
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