It's even acceptable to alter them, if appropriate, based upon new learnings or course changes.

如果适当，甚至可以根据新的经验或过程变更来改变它们。

youdao

It occurred to me that the slightest slip of the tongue, the smallest mistake, even a social faux pas can alter our self critical selves momentarily or forever!

依我所见，我们谈吐时的半点闪失，最微小的错误，哪怕是一次社交失仪都会在一瞬间甚至永远改变我们对自身的看法！

youdao

You can add and drop indexes; alter tables by dropping, renaming, or adding columns; and even drop down into SQL as necessary.

可以添加和删除索引；通过删除、改名或添加列来修改表；甚至在必要的时候借助于SQL。

youdao

The current film makes a case for Bruce Wayne being a deep-dyed depressive at the outset, given all the guilt he's been internalizing since childhood, but he remains pretty glum even after liberating himself -- or so one would think -- through his costumed alter ego.

WSJ: Holy Melancholy, 'Batman'!