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
because I like being my own boss.
是因为我喜欢自己当老板。
Joy and sorrow are next-door neighbours.
是喜是忧难以分。
It was getting very windy in the hills.
山上还刮起了大风。