or rather，for example ，it's like ，namely，in other words ，that is，such as

（1）Many good practices are included in the guidance，

for example

for example

，lock your computer while stepping away from it.
（2）The three boys，

namely

namely

，Tony，Tom and Alex，won the first prize in the computer competition.
（3）How man first learnt to invent words is unknown；

in other words

in other words

，the origin of language is a mystery.
（4）There are many famous people in the IT industry，

such as

such as

Bill Gates and Jack Ma.
（5）He couldn't lend me his mobile，

or rather

or rather

he didn't want to.
（6）I bought a Kindle last week.

It's like

It's like

a moving library and I can read anytime anywhere.
（7）Tom forgot his email password，

that is

that is

，he has some trouble sending us the file this morning.