a

I

OK

👍

$BTC

#BTC

BTC breaks through $100,000, hitting an all-time high. This is a super long Chinese sentence without any punctuation or spaces, just to test the translation model's performance when handling extremely long, unbroken text and the accuracy of the highlight feature in such extreme cases. Especially when the translated text length differs significantly from the original, whether the highlight offset is correct is crucial, as translating from Chinese to English usually lengthens the text, while English to Chinese typically shortens it. This length variation is one of the main reasons for highlight positioning errors, so we need to use this extreme case to validate.