英文問題，「嘟八達通」既英文點講?

答can you try again 0個位講得0岩.直接而準確.當然,如果語境唔係太清楚,而你又想準確d,指明個意思,可以叫佢

please validate your octopus card again (你可唔可以「嘟」多一次)
can you use your card to validate for me again? (你可唔可以用你張卡幫我嘟多一次?( 即係幫我嘟埋 )

因為我唔知你嘟乜,如果你嘟八達通搭車,就用以上例句.validate一詞不太適合用於shopping purpose.如果你嘟咭0黎買野,字眼就稍有改變:

please place your octopus card on the processor again (你可唔可以「嘟」多一次)
can you process the amount through your octopus card again? (你可唔可以用你張卡幫我嘟多一次?( 即係幫我嘟埋 )

順帶一提,部份答案太有禮貌,用could作為modal verb,日常生活唔需要咁重. can已經足夠.

廣東話「嘟」指插咭後發出聲音，係英文toot字(發出嘟嘟聲)嘅音譯，非常傳神。
「你可唔可以用你張卡幫我嘟多一次?( 即係幫我嘟埋 )」 最好說成
Can you use your card to 'toot' once more for me? (ie 'toot' for me too)

Would you mind to validate your Octopus card again?

{你可唔可以「嘟」多一次?}這句話可以講成:

"Could you pay the fee with your Octopus Card again?"

如果問別人地{你可唔可以用你張卡幫我嘟多一次?}應該講成:

"Could you use your Octopus Card to pay the fee for me?"

Can you put your card on the machine agian,plase?

你可唔可以「嘟」多一次

can you try again? / can you put your octopus on here again?
唔洗咁詳細...佢會明

Would you please swipe your Octopus card one more time?