việc buôn bán thương mại kinh doanh 
business like: buồn bã → →
geschäftlich ☊ 
về việc buôn bán ☊ 
生意上的 ☊ shēngyìshàng de geschäftlich ☊ về việc buôn bán ☊ ☊ der Händler ☊ người buôn bán ☊ ☊ der Hehler ☊ người buôn bán đồ trộm cắp ☊ ☊ When he left school, he went into business with his brother. ☊ business ☊
He was arrested on drug distribution charges. ☊ distribution ☊
His face fell (= showed disappointment, sadness, etc.) when he read the headlines. ☊ face ☊
a feeling of hunger/excitement/sadness, etc. ☊ feeling ☊
A jumble sale will be held in the village hall on Saturday. ☊ hall ☊
identify sb/sth as sb/sth: The bodies were identified as those of two suspected drug dealers. ☊ identify ☊
market stalls/traders ☊ market ☊
No one will take offence (= feel upset or insulted) if you leave early. ☊ offence ☊
He gave a slight, sad smile. ☊ sad ☊
She shook her head sadly. ☊ sadly ☊
If you think I'm going to help you again, you're sadly (= completely) mistaken. ☊ sadly ☊
His work has been sadly neglected. ☊ sadly ☊
Some of them carried the guns which were the tools of their trade (= the things they needed to do their job). ☊ tool ☊
I understand how upset you must be feeling. ☊ upset ☊
The government has declared war on drug dealers. ☊ war ☊