focus in与focus on有什么区别

focus in后加doing sth.

focus on. 用法为focus sth on

1.

Their talks are expected to focus on arms control.

他们的会谈预计会集中讨论军备控制问题。

2.

They focus on overt discrimination rather than insidious aspects of racism.

他们关注的是公开的歧视，而不是种族主义的一些潜在问题。

3.

His administration's economic policy would focus on reining in inflation.

他的***的经济政策将侧重于控制通货膨胀。

4.

Throughout the exercise, focus on keeping your abs tight.

整个锻炼过程中，注意要紧绷腹肌。