How to say “Folded down, the telescopic ladder fits in the trunk, which is the only reason I bought it.” in Japanese
In Japanese
この伸縮はしご、縮めればトランクに入るんだ。正直、それだけで買ったの。
Kono shinshukuhashigo, chijimereba toranku ni hairu n da. Shōjiki, sore dake de katta no.