The Romans observed that, when volcanic ash mixes with water and then cools, itgets extremely hard and almost impossible to break up.
罗马人观察到，当火山灰与水混合然后冷却，火山灰变得非常坚硬，几乎不可能分解。
2
The first horse often goes hell for leather, hits a few fences but gets away withit.
第一匹马往往跑得飞快，会撞落几根横杆，但一般不会被罚分。
《柯林斯英汉双解大词典》
3
She also needs feeling to do one of her favorite things, drink coffee. "The problem with a paper coffee cup is that my hand will close until itgets a solid grip," she says.