1.split into 分成

Its evolution can be crudely split into three periods.
它的發展可以大致分成三個階段。

The group eventually split into three segments, relegating distinct roles and tasks.
幫會最終分裂成三個陣營，歸入不同的任務和角色。

2.show off 突出；炫耀，賣弄

I love to show off your photo samples.
我喜歡拿用你拍的照片來炫耀。

Like many people, birds sing to show off.
和許多人一樣，鳥用鳴唱來賣弄自己。

3.operating system 操作系統

It also ran linux, a free operating system.
它預裝的是開源的操作系統linux。

Directx does not install on current operating system.
當前系統未安裝directx
4.as if 好像， 似乎， 仿佛

He acted as if he had nothing to learn.
他表現得好像沒有東西可學一樣。

It was as if time stopped in burma.
那一刻的緬甸，時間仿佛停止。