bar-finger

基本解释

The ad shows an office worker munching on a chocolate bar which turns out to be the bloody severed finger of an orang-utan.
广告中，一个办公室工作人员正用力咀嚼着的一块巧克力竟是一根血淋淋的猩猩的断指。

There are a couple of related key features here: first we have the zoom bar in the album app -- you hold down your finger to prompt the bar, and then you can zoom in and out with your vertical scrolling action.
ENGADGET: Sony Ericsson Xperia X10 Mini / Mini Pro review
For starters, the Android version offers two keyboard options -- a simple QWERTY-only and one with a space bar -- that can be toggled on or off with a two finger swipe down.
ENGADGET