先看看这个场景说了什么
对话 1
Hi there, the gate didn't open for you. Did the screen say your Opal balance was low?
你好，闸机刚才没有为你打开。屏幕是不是显示你的 Opal 余额不足？
中文提示
Yes, it said the balance was too low. I thought I still had enough for one trip.
对，它说我的余额太低了。我以为卡里还有够坐一趟的钱。
对话 2
No worries. You can top it up at the machine beside the ticket window.
没关系。你可以在售票窗口旁边的机器上充值。
中文提示
Okay. Does that machine take cards? I don't have any cash on me.
好的。那台机器可以刷卡吗？我身上没有现金。
对话 3
It does. Tap your bank card, choose the amount, and wait for the receipt before you come back to the gate.
可以。刷一下你的银行卡，选择金额，等收据出来后再回到闸机这里。
中文提示
Got it. What's the smallest amount I need to add to get to the city centre?
明白。我最低需要充多少钱，才能坐到市中心？
值得记住的词汇
too low
太低；不够
on me
随身带着
top up
充值
come back to
回到
be safe for
足够应付；比较稳妥
head straight down
直接下去
准备好开口了吗？
听原声、看中文意图、录下回答，再根据反馈修正。