like: fließend → →
fließend ☊ 
trôi chảy ☊ 
☊ fließend ☊ 流利的 ☊ liúlì de She's fluent in French and German. She also speaks a little Italian. ☊ also ☊
The studio had all the essentials like heating and running water. ☊ essential ☊
a fast-flowing stream ☊ fast ☊
investigate how, what, etc...: The research investigates how foreign speakers gain fluency. ☊ investigate ☊
There is hot and cold running water in all the bedrooms. ☊ water ☊