like: Forscher → →
der Forscher ☊ 
nhà nghiên cứu ☊ 
☊ Forscher ☊ 研究员 ☊ yánjiūyuán Researchers in this field have made some important new discoveries. ☊ discovery ☊
The researchers set the birds free. ☊ free ☊
a research scientist ☊ scientist ☊