这张车票3日内有效。
由于采取了更有效的措施，疾病已得到控制。
With more effective measures put in place, the disease has been brought under control.
团体运动是保持健康生活最有效的方法之一。
Group exercise is one of the most effective ways to sustain a healthy lifestyle.
小组锻炼是提高身体素质的最有效的方法之一。
Group exercise is one of the most effective ways to improve physical fitness.
但是适量的压力会让我们更有效率、更健康、更安全。
But the right amount of stress makes us more efficient, healthier and safer.
情况十分紧急，我们必须立刻采取有效措施解决这一问题。
The situation is so urgent that we must take an effective way to solve the problem right now.
事实证明，把电视角色印在午餐盒上是一种有效的营销策略。
Putting TV characters on lunch boxes proved an effective marketing strategy.
对于那些想强健身体的人来说，攀岩是一种有趣又有效的方式。
For those who want to get into shape, rock climbing is a fun and effective way.
一种更有效的方法是“重构”，也就是有意识地从更积极的角度重新解释一种情况。
A more effective technique is "reframing", which means consciously reinterpreting a situation in a more positive light.
美国宪法的起草者试图建立一个有效的国家政府，同时保持各州的自治和个人的自由。
The authors of the United States Constitution attempted to establish an effective national government while preserving autonomy for the states and liberty for individuals.
只有电影人与艺术历史学家之间有效的合作，才能创作出能够提升观众对艺术的认知的电影。
Only an effective collaboration between filmmakers and art historians can create films that will enhance viewers' perceptions of art.
蜜蜂是食物链的重要组成部分，因为开花植物的授粉依赖于昆虫，而蜜蜂是最有效的授粉昆虫。
Bees are a critical part of the food chain because flowering plants depend on insects for pollination and the honeybee is the most effective.
研究人员发现，那些报名辅导他人的学生会更努力地去理解、更准确地回忆、更有效地运用材料。
Researchers have found that students who sign up to tutor others work harder to understand the material, recall it more accurately and apply it more effectively.
研究人员已经证实，当人们动脑筋时，大脑中会发生生化变化，使其在注意力和记忆等认知区域更有效地发挥作用。
Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive areas such as attention and memory.
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