The US Senate has passed a sweeping tax reform bill, clearing the way for the birth first big legislative achievement of Donald Trump's presidency.

美国参议院通过了广泛的税收改革法案，为唐纳德·特朗普总统上台以来首个最大的成就扫清了道路。

Dr. Martin wrote " astute analysis of brain size and pelvic anatomy and our fossil predecessors have confirmed that birth first began to become challenging when the genus Homo emerged around two million years ago."

马丁博士写道：“对大脑大小和骨盆解剖结构的敏锐分析以及我们的化石前辈已经证实，大约 200 万年前，当人属出现时，出生就开始变得具有挑战性。”