It is a system, experts say that is made possible by Tanzania’s proximity to the equator.

这是一个系统，专家称因为坦桑尼亚靠近赤道使得这个时间系统成为可能。

The stresses of the pandemic have only exposed the cracks in America's unstructured childcare system, experts say.

专家表示，疫情带来的压力无疑也暴露了美国松散的托儿行业的问题。