伏击从隐蔽地点进行的突然袭击

A sudden attack made from a concealed position.

他的士兵们已很好地隐蔽起来。

His soldiers were well camouflaged.

地雷，水雷一种用来摧毁敌军部队、船舰、碉堡或装备的爆破装置，通常安放在隐蔽处，由于接触、靠近或定时而引爆

An explosive device used to destroy enemy personnel, shipping, fortifications, or equipment, often placed in a concealed position and designed to be detonated by contact, proximity, or a time fuse.

不可能的，因为它只是想象，确实有一个解决方案。过分地隐蔽。

Трудно даже представить, что у этой задачки есть решение. Чёрт ногу сломит.