Every time
This structure expresses that every time a specific action occurs, another action also occurs.
Examples
カラオケに行くたびに、彼女は新しい歌を覚える。
Every time she goes to karaoke, she learns a new song.
この映画を見るたびに、泣いてしまう。
Every time I watch this movie, I end up crying.
彼と会うたびに、楽しい時間を過ごす。
Every time I meet him, I have a good time.
Quick check
Every time she goes to karaoke, she learns a new song (カラオケに行く___、彼女は新しい歌を覚える)。