6. be (as) flat as a pancake

pancake的意思是“薄煎饼”，它的特点就是又平又圆又薄。这个习语就形容非常平坦，平坦如镜。

The land in that area is as flat as a pancake.

剑桥周围的乡村地势平坦如砥。

7. that's the way the cookie crumbles

crumble的意思是（使）粉碎；（使）成碎屑，曲奇饼成了碎屑，比喻“事已定局，无可变更”。

这和中文里的生米已成熟饭意思差不多。

We lost the game, but that’s just the way the cookie crumbles.

我们输了比赛，但是事以至此只能这样了。

8. go/sell like hot cakes

谁不爱热气腾腾的美味蛋糕呢？这个习语就是热销的意思。

The new game is apparently selling like hot cakes.

显然，他新设计的电子游戏很畅销。

9. the slice/share of the cake

slice指切下的食物薄片，share是一份，份额，这很符合中文里分一杯羹的说法。

Everyone should have a fair slice of the cake.

每个人都应公平地分到一份。

10. have a sweet tooth

sweet tooth？难道牙齿还分甜咸？这个习语是“喜欢甜食”的意思哦。

Finally, even the common man could afford to satisfy his sweet tooth.

最后，连平民百姓都喝得起这种饮料，以满足他们对甜食的喜爱。