whatchamacallit
1. I forget what the thing I need is called, so I just call it a whatchamacallit.
哎,在这种情况下,不就像我们在中文里说的“那个叫什么来啦”?
2. Bring me the whatchamacallit so I can loose this bolt.
把那东西拿给我,我要放松这个螺丝。
3. LL: Exactly. But you cannot tell a shop clerk "I want to buy whatchamacallit".
那当然哟,要是你对店员说你想买那个叫什么来啦,他怎么知道你要什么呢?