It's a diverse environment with water tending to be bluish near the surface and reddish deeper down.
它是一个多样性环境,靠近表面的水趋近蓝色,往下深处是淡红色。
We spend some time each year in the United States, visiting friends and family—going to our grandson's school to be his "show-and-tell, " and tending to tax returns and medical checkups.
我们每年在美国度过一些时间,拜访亲友——到我们外孙的学校去作他的“展示和讨论”作业的主题,以及处理纳税申报单和做健康检查。
But at best, competing businesses will embody different theories, with the bad ones tending to be weeded out.
但是,最好的情况是,相互竞争的企业拥有不同的理论,其中表现较差的将被淘汰。
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