Japanese phrase
交代しよう。 kō tai shi yō
Meaning
Let's switch.
When to use it
Suggests switching roles or taking turns. It is a casual proposal used when one person replaces another or gets the next turn.
Example dialogue
ぼくが先にやったから、交代しよう。 bo ku ga saki ni ya tta ka ra kō tai shi yō
I went first, so let's switch.
うん、次はわたしね。 u n tsugi wa wa ta shi ne
Okay, it's my turn next.