如果左旋氨基酸占大多数的话，就说明这些氨基酸从根源上来说是具有生物性的。
A prevalence of left-handed amino acids would indicate they were biological in origin.
不论起因是什么，从根源上查找并认真对待。
当然比积极应对压力更好的办法就是从根源上减少压力了。
Reducing the stress : Even better than the positive coping methods, of course, is reducing stress at the source.
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