Meaning of wài jiā:
wài jiā
外加
Conjunction
in addition
Jīntiān wǒ yǒu hěn duō zuòyè, wài jiā yī piān lùnwén.
今天我有很多作业,外加一篇论文。
Today I have a lot of homework, in addition to an essay.
Adjective
extra
Zhè dào cài wài jiā le yīxiē xiāngliào.
这道菜 外加了一些香料。
This dish has some extra spices added.