verse  n.诗篇; 诗，韵文; 诗节，诗行; 圣经中的节;

            v.作诗或者从事于作诗; 使熟练或者精通;

versed in  精通 熟练

in-depth  深入的，彻底的;

comprehensive adj.综合的; 广泛的; 有理解力的，悟性好的; [保险业] 总体担保的;

blends 杂糅

pressed for 迫切要求 

closer to the iron 

Though relatively rare today, for some tasks you may still occasionally need to get 'closer to the iron'  by using lower-level languages such as these that are more directly mapped to the underlying hardware architecture.

In short, the standard implementations of python today compile(i.e. translate) source code statements to an intermediate format known as byte code and then interpret the byte code.Byte code provide portability, as it is a platform-independent format. 

number crunching 运算

crunch

嘎吱嘎吱地咬嚼; 嘎吱嘎吱地压，碾，跺; [俚] 运行，处理;

vi.嘎吱嘎吱地咀嚼; 嘎吱嘎吱地动; 发嘎吱嘎吱声;

n.嘎吱声; 决定性冲突; 危急情况; 经济收缩;

The computer does most of the number crunching.计算机会完成大部分运算。

intangible 触不到的; 难以理解的; 无法确定的;