Man needs difficulties; they are necessary for health.
人需要困扰，困扰是心理健康的必须之物。
Man needs difficulties; they are necessary for health.
人需要困扰，困扰是心理健康的必需之物。
They are very necessary for our health and help our bodies work well.
它们对我们的健康和帮助我们的身体良好运作是非常必要的。
Exercise is necessary for strong bones and both heart and lung health.
锻炼对强健骨骼和心肺健康都是必要的。
For to cry under certain emotionally disequilibrating conditions is necessary for the maintenance of health.
因为在某些感情失衡的状态下，哭对保持身体健康是必要的。
The basic food groups provide the nutrients necessary for good health and daily activity.
基本食物组合可以为健康和每日活动提供必需的营养。
Health and education are often necessary preconditions for meaningful participation in public life.
医疗和教育往往是在有意义的公共参与的先决条件。
It's necessary for our health.
它对我们的健康是必要的。
Appropriate entertainment is necessary for emotional and psychological health.
适当的娱乐对于情感和心理的健康是必要的。
Sleep is necessary to [for] one's health.
食物对生命是必要的。
For the long term health of golf, less signatures and more affordable golf is necessary.
为了高尔夫长远的健康，我们需要少一些“签名”，多一些人们负担得起的球场。
Sleep is necessary for one's health.
睡眠对健康是必不可少的。
It is necessary to nurture general practitioners for building of community health care system.
为了加快构建完善的社区卫生服务体系，要大力培养全科医生。
Zinc is one of about 20 elements necessary for good health.
锌是保持身体健康的20种必需元素之一。
Zinc is one of about 20 elements necessary for good health.
锌是保持身体健康的20种必需元素之一。
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