by experience

基本解释

I know this by experience.
我从经验得知这一点的。
For that, he included a class of object that his subjects would have learned, by experience, have a tendency to move, but which past evolution could have had no purchase on: motorised vehicles.
为此，他收集了一系列他的受试者已经凭经验有所了解的物体。它们有移动的趋势，但在长期的进化进程中所不可能接触到的物体:汽车。
On this foundation an entire "number sense" is built, as children realise that bigger and bigger numbers can be reached by adding "one more" and learn by experience how these bigger numbers behave.
在此基础上人们建立了“数字感知”，正如儿童意识到更大的数字可以通过“累加”获得，而且可以通过经验学习这些更大数字的特点。

Because of that experience, I will always remember that nice things still happen in a world that is driven by money.
It seems not enough that the philosopher have knowledge of the forms but this knowledge has to be supplemented by experience, by judgment and by a kind of practical rationality.
看起来,仅是哲学家拥有某种形式的知识还不够,这知识,还要有经历的加持，以及一种实际的合理性判断。
耶鲁公开课 - 政治哲学导论课程节选
Being a hobo is produced in this little vignette by the experience of seeing a hobo get pie from your mother.
当流浪汉是受了小时候经历的影响,就是看到一个流浪汉从妈妈那儿得到了一块派。
耶鲁公开课 - 1945年后的美国小说课程节选

Dr. Ingraffea has also shown an increasing willingness to make statements refuted by experience and independent review.
FORBES: PSEHE: Where Ideology Trumps Reality