Her motherland is in the tropical region.（英译中)

I guess there are much less people in the Arctic regions than here.（英译中)

She is more clever than the other girls in her class.（英译中)

She locked her jewels in the safe.（英译中)

She lets her children play in the garden.（英译中)

Is service included in the bill？（英译中)

I saw the joy in her smiling face.（英译中)