en_tn/act/03/20.md

times of refreshing from the presence of the Lord

Possible meanings are 1) "times when God will strengthen your spirits" or 2) "times when God will revive you"

from the presence of the Lord

Here the words "presence of the Lord" is a metonym for the Lord himself. Alternate translation: "from the Lord" (See: rc://en/ta/man/jit/figs-metonymy)

that he may send the Christ

"that he may again send the Christ." This refers to Christ's coming again.

who has been appointed for you

This may be stated in active form. Alternate translation: "whom he has appointed for you" (See: rc://en/ta/man/jit/figs-activepassive)