use / aid
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with the aid of
The use or application of something or someone in order to achieve a goal or complete a task. This expression is mainly used in formal or technical language.
Der Täter öffnete das Schloss unter Zuhilfenahme eines Dietrichs.
The perpetrator opened the lock with the aid of a lock pick.
The word is made up of 'zu', 'Hilfe' (help), and 'Nahme' (from 'nehmen' — to take). Literally, it means that one takes something to help oneself.
Die Bergung des Fahrzeugs gelang nur unter Zuhilfenahme eines Krans.
The recovery of the vehicle was only successful with the aid of a crane.
This word is used almost exclusively in the fixed expression 'unter Zuhilfenahme von' (with the aid of) (+ dative). It describes which means or tool was used.
Die Daten wurden unter Zuhilfenahme spezieller Software analysiert.
The data was analyzed with the aid of special software.
The expression 'unter Zuhilfenahme von' (with the aid of) belongs to formal written language. It is often found in official texts, police reports, or academic papers.
Der Bericht wurde unter Zuhilfenahme externer Gutachten erstellt.
The report was prepared with the aid of external expert opinions.
operation / effort / use
'der Einsatz' and 'die Zuhilfenahme' can both mean the use of something to solve a task. 'Einsatz' is much more common and fits many normal situations, for example with tools, methods, or technology. 'Zuhilfenahme' is mostly used in the fixed phrase 'unter Zuhilfenahme von' (with the aid of), and it sounds more formal or technical. The words can be confused because both say that you use something. In everyday language, 'Einsatz von' is usually more natural. In reports, instructions, or formal texts, 'unter Zuhilfenahme von' can sound more precise.
Unter Zuhilfenahme eines Messgeräts prüft Ali die Temperatur des Wassers.
With the aid of a measuring device, Ali checks the temperature of the water.
Beim Einsatz der neuen App sparen wir viel Zeit im Büro.
By using the new app, we save a lot of time at the office.