A4
n. A4型紙（規格為297×210毫米的紙）
??? 情景例句
Its' time we talked about the new client base, when do you have time?
我看是時候談談這個新客戶的情況了，你什么時候有空？
It's a quarter past five.
現在是五點一刻。
She got up before 7 o'clock in the morning, and quickly washed her hands and face.
00以前起床，快快地洗手洗臉。