How did it come about that he knew where we were ? 他是怎么知道我们在什么地方的呢？
How did all this come about ? 这一切是如何发生的？
The real breakthrough in this line of research came about 1940 . 在这一研究分支中真正的突破大约在1940年。
Can you tell me how this dangerous state of affairs in europe came about ? 你能告诉我，欧洲这种危险事态是怎样发生的吗？
We and the people who came about our house soon learned to let him be . 我们以及到我们那里来的人们，不久就习惯于随他去了。
This unevenness comes about because topics are developed in a logical order . 所以出现这种不平衡，是因为课题是按逻辑顺序展开的。
One should keep in mind that scientific development usually comes about in somewhat regular fashion . 人应该在脑子里记住科学的发展往往来自于某种正规的程序。
Thus it came about that the forward motion of progressivism came to a halt in the early uncertain months of 1939 . 这样，在一九三九年不稳定的头几个月，进步运动的前进步伐停止了。
The importance of these northeastern cities, both as ports and as hubs of manufacturing, did not simply come about by chance . 这些东北部城市既是港口又是制造中心，其重要性并非偶然形成的。
