Observation pattern
[计] 观察模式
🧩 词语组成解析
pattern
['pætɚn]
n. 模式;花样，样品;图案;榜样，典范;
vt. 模仿;以图案装饰;
vi. 形成图案;
🗣️ 情景例句
I have the key, but it doesn't work.
我有钥匙， 但是开不开箱子。
The first wealth is health.
健康是最重要的财富。
There were coins everywhere.We looked for them, but we could not find them all.
到处都是硬币。我们虽然找了，但没有把它们全部找到。