Ad extremum
[医]直到有效
🧩 词语组成解析
ad
[æd]
n. 广告;网球中的优势分advantage. ad in;
n. 极值
🗣️ 情景例句
Yes, you have a point there.
对，你说的这一点有道理。
I was born anAmerican; I live an American; I shall die an American.
我生下来是美国人，活着是美国人，死时也是美国人。
Armed with a torch, the vicar went up into the clock tower to see what was going on.
牧师拿着一支电筒走上钟楼想去看看究竟发生了什么事情。