The president would get down on all fours with John-John in the Oval Office.

总统会在椭圆形办公室与约翰-约翰四肢着地。

The last thing we observed, as we left the spot, was Giraud, crawling about on all fours, with a thoroughness in his search that I could not but admire.

我们看到的最后一件事是吉罗， 他四肢着地爬来爬去， 他的搜索彻底， 我不得不佩服。