"You are free to smoke but please use a portable ashtray for your cigarette ash and cigarette butts."
"You are free to smoke but please use a portable ashtray for your cigarette ash and cigarette butts."
"you are free to ~" 「〜のは自由」
"but" 「だけど」
"please use ~" 「〜使ってください」
"a portable ashtray" 「携帯灰皿」
"for your cigarette ash and cigarette butts" 「灰・吸い殻は」
[吸い殻](https://eikaiwa.dmm.com/uknow/questions/101888/)についてもっと詳しく知りたい方はクリックしてください。
It's your choice to smoke, but please be sure to put your ashes and cigarette butts in a portable ashtray.
この場合、次のような言い方ができますよ。
ーIt's your choice to smoke, but please be sure to put your ashes and cigarette butts in a portable ashtray.
「喫煙はあなたの自由だけど、灰と吸い殻は携帯灰皿に入れてくださいね」
to put your ashes and cigarette butts in a portable ashtray で「灰と吸い殻を携帯灰皿に入れる」
ご参考まで!