To focus closely on something
专注于某事 (zhuanzhu yu mou shi)
"Let’s zoom in on the key issues first."
"让我们先关注关键问题。" (rang women xian guanzhu guanjian wenti)
to take responsibility for what you did wrong.
disappointed but having learned from the experience
to take on someone's role or responsibility
to understand the overall situation or goal
to form groups of two
to see a small sign of improvement in a bad situation