如果你的卡余额不足，则需要买票。

If your card balance is below the fare required you must buy a ticket.

youdao

我的电话余额不足了。

My balance is not enough.

youdao

你的（账户）余额不足，不能兑换更多现金。

You don't have enough cash to redeem for more money.

youdao

你的（账户）余额不足，不能兑换更多现金。

You don't have enough cash to redeem for more money.

youdao