turtle
n
1 large reptile that lives in the sea and has flippers and a large horny shell 海龟.
2 (US) any of various types of reptile with a large shell, eg a tortoise, terrapin, etc (任何种类的)龟(如陆龟、 水龟等). =>illus at tortoise 见tortoise插图.
3 (idm 习语) turn `turtle (infml 口) (of a boat) turn upside down; capsize (指船)倾覆, 翻.
I suggest that we ask users of this machine what they think about it. We can photograph them using it too. Then we can put their comments at the top of the advertisement in big print. We can bring in some humour too. People enjoy reading humorous ads.