Corps of engineers
工兵部队
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
n. 工程师；机械师（engineer的复数）
🗣️ 情景例句
They know that I'm married and that I have a family.
他们知道我结婚了， 有一个家。
He is surprised.
他大为惊讶。
probably vertical, cliffs, and gentle sediment-covered terraces,
乃至垂直的峭壁和沉积物覆盖的缓和的阶梯地带，