like: saugen → →
saugen ☊ 
hút ☊ 
☊ saugen ☊ 吸 ☊ xī Nachdem wir alle Zimmer gestrichen haben, saugen wir überall Staub. ☊ Sau khi sơn tất cả các phòng, chúng ta hút bụi mọi nơi. ☊ (Lektion 45, Nr. 646) expand sth: In breathing the chest muscles expand the rib cage and allow air to be sucked into the lungs. ☊ expand ☊
suck at/on sth: The baby sucked at its mother's breast. ☊ suck ☊
suck sth + adj.: Greenfly can literally suck a plant dry. ☊ suck ☊