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Newborn babies respond enthusiastically to soft stroking, cuddling and caressing, say experts
In developed countries, the average birth weight of a full-term newborn baby is approximately 3.4 kg, and is typically in the range of 2.7 - 4.6 kg.
在發達國家，足月新生兒的平均出生體重大約為3.4公斤，一般範圍在2.7~4.6公斤之間。
如果形容某人是 in safe hands 意思就是他們是在可靠的人手中，有強人在關照。
John is going to be operated on by one of the best surgeons in the country. He's in safe hands.
The new CEO of the company had degrees in engineering and business administration. The staff knew they were in safe hands.
短語 a safe pair of hands 意思同上面講到的表達意思類似，指某人是可以被信賴的，工作中不會出差錯的。
My boss gives me all the difficult assignments. He knows I am a safe pair of hands.