This balance (quantity not currency) is tracked in real time mode by the handset and the user is notified when it ends.

手机会实时记录更新该余额(指“存量”而非“货币”)，并在用完时提示用户。

youdao

This balance (quantity not currency) is tracked in real time mode by the handset and the user is notified when it ends.

手机会实时记录更新该余额(指“存量”而非“货币”)，并在用完时提示用户。

youdao