But with age, your brain and the grey cells start shrinking.

但随着年龄的增长，你的大脑和灰细胞开始萎缩。

The little grey cells, my friend, the little grey cells!

小灰细胞，我的朋友，小灰细胞！

Let us then employ our little grey cells.

让我们使用我们的小灰色细胞。

The ideal menu for our little grey cells is still largely unknown.

我们的小灰色细胞的理想菜单在很大程度上仍然未知。

There is an exercise most excellent for the development of the little grey cells.

有一个最适合小灰细胞发育的练习。

" If you would use your grey cells, and see the whole case clearly as I do, you too would perceive it, my friend" .

“如果你能用你的灰色细胞，像我一样清楚地看到整个案子，你也会看到它，我的朋友”。

" Some of the greatest criminals I have known had the faces of angels, " remarked Poirot cheerfully. " A malformation of the grey cells may coincide quite easily with the face of a madonna" .

“我所知道的一些最伟大的罪犯长着天使的脸， ” 波洛高兴地说。“灰色细胞的畸形可能很容易与麦当娜的脸重合” 。