This is the condition for really the lion's share of chemistry, biology, and other kinds of changes we'll be concerned with.

这是真正要在化学，生物学和我们将要关注的其他类型变化中占有最大份额的条件。

At my age, I don't need to be concerned with it...

到我这种年龄，就不需要关心了。

His followers must also be concerned with their hearts.

他的信徒也必须关注他们的内心。

We can only be concerned with our own area of responsibility.

我们可以只关心我们自己领域的责任。

What parts of this issue would they care about or be concerned with?

这个问题的哪些部分他们会关心或关心? ?。