Observation hole
[机] 观察孔
🧩 词语组成解析
hole
[hol]
n. 洞，孔;洞穴，穴;缺陷;<口>绝境;
vt.& vi. （在…上）打洞或穿孔;
vi. 凿洞;（高尔夫球等）进洞;
🗣️ 情景例句
I owe you a good steak dinner.
我欠你一顿牛排晚餐。
A growing youth has a wolf in his belly.
青年成长时，食量大如狼。
What's the weather like in spring?
春季的天气怎么样？