The best practice is to have many columns in a row, as opposed to linking different rows across different tables via key columns.
相对于通过键列跨不同的表链接不同行，最佳实践将是在一行中有许多列。
That change is not to cut the umbilical cord linking the child with the placenta straight after birth-as is standard practice.
这个改变是，不要像惯常操作那样，在胎儿出生后马上剪断连接胎儿与胎盘的脐带。
It makes an important contribution to the technical body of knowledge and expertise in this crucial area, linking research to current practice and application.
它对这一关键领域的技术知识体系做出了重要贡献，将研究与目前的实践和应用联系了起来。
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