商贸区的英文：
business and trade district

business是什么意思：
n. 商业，交易，生意；公司，商店；事情；职责

Be engaged in; be Busy in
从事于

to sit for business
因公滞留

As Busy as a bee
(象蜜蜂)忙忙碌碌的

trade是什么意思：
n. 贸易；生意；交换；职业；手艺
v. 交易；对换；用…进行交换

Jack of all trades is of no trade
万事皆通,一无所长

the trade in pornography
色情作品的交易.

Foreign trade departments handle export and import trade.
外贸部门经营进出口业务。

district是什么意思：
n. 选举区；行政区；地区，区域

The custom still obtains in districts.
这种风俗在某些地区仍然流行。

They are residents of the same electoral district.
他们是同一个选区的居民。

They have demolished the slum district.
贫民区已被拆除。