to study or investigate something deeply
etwas tiefgründig studieren oder untersuchen (etwas tiefgrundig studieren oder untersuchen)
"You need to look into research materials before writing your paper."
"Du musst die Forschungsmaterialien durchsehen, bevor du dein Papier schreibst." (Du musst die Forschungsmaterialien durchsehen, bevor du dein Papier schreibst.)
to continue working or not give up when things are hard
to regard someone or something as inferior or less worthy
to gain knowledge or understanding through experience or obs...
to mentally separate yourself from stressful situations
to reduce the expenses involved in trading or production
to send goods to a destination