情感冲突可以动摇哪怕是最牢固的人际关系的基础。Emotional conflict may shake the foundations of even the strongest relationship.黏土和砂岩都是不牢固的岩石构造。Both clay and sandstone are unstable rock formations.生活在这种全无隐私可言的环境之下，最牢固的婚姻也会破裂。Living in this goldf...
There was a glow on his face , wrinkled by a life time of suffering, that inspired one with a feeling of unshakable optimism.他那饱经风霜的多皱的脸上发着光彩, 使人产生一种乐观的感觉.She had a natural courtesy combined with an unshakable conviction...