英语语法分析

But he himself got to sleep in the footsteps, stilly.

他自己则在“唰唰唰”的脚步中睡着了，一动不动。

With certain conditions, the mass of component can be stilly substituted by several concentrated mass.

其基本思路是，构件的质量在满足一定的条件下，可由几个集中质量静替代。

I was lucky because I am stilly young and I have plenty of time and opportunities to smooth English out.

我乐，是因为我还年轻，我还是大有时间和机会把英语摆平！