If you leave your clothes in the washer too long they get stinky because they're still half wet.
If you don't take your clothes out of the washer right away they can start to smell because they're still wet.
1) If you leave your clothes in the washer too long they get stinky because they're still half wet.
「長い間洗濯物を洗濯機に置いておくと、半乾きでくさくなっちゃうよ。」
2) If you don't take your clothes out of the washer right away they can start to smell because they're still wet.
「すぐに洗濯機から洗濯物を出さないと、濡れているから臭い始めるよ。」
「洗濯物を洗濯機に残しておく」は
leave one's clothes in the washer
または「洗濯機から洗濯物を出さない」
not take one's clothes out of the washer
のようにも言えます。
「臭くなる」
get stinky
start to smell
ご参考になれば幸いです！
日本 
