Lack of sleep, high stress levels, and strained relationships often result from too much work and too little play.
睡眠不足，压力山大，还有紧张的人际关系，常常都是过度工作和缺乏活动造成的。
2
She hears the voice of her mother, high and strained and tight with fear, and turns away.
小女孩听到了妈妈的尖叫，紧张的叫声中充满了恐惧。
3
The most effective way is lower frequency tapping, as other ways may cause production decrease or need high cost or be re strained by environment or require great Labour intensity.