keep
The German verb halten means to hold or to stop.
verb
Meaning: to hold
Ich halte die Tasse.
I am holding the cup.
Meaning: to stop
Der Zug hält am Bahnhof.
The train stops at the station.
Meaning: to keep
Er hält sein Versprechen.
He keeps his promise.
Meaning: to consider
Ich halte ihn für einen guten Lehrer.
I consider him to be a good teacher.
Meaning: to think
Ich halte das für eine gute Idee.
I think that's a good idea.
A1: Ich halte den Stift.
A1: I hold the pen.
A1: Kannst du bitte die Tür halten?
A1: Can you please hold the door?
A1: Er hält das Buch in der Hand.
A1: He holds the book in his hand.
B1: Gestern habe ich den Bus angehalten.
B1: Yesterday, I stopped the bus.
B1: Sie wird den Vortrag halten.
B1: She will give the presentation.
B2: Der Lehrer hielt eine interessante Vorlesung.
B2: The teacher gave an interesting lecture.
C1: Die Polizei hat den Verdächtigen festgehalten.
C1: The police detained the suspect.
C1: Nachdem er den Rekord gebrochen hatte, konnte er ihn lange halten.
C1: After breaking the record, he was able to hold it for a long time.
C2: Wenn du dich nicht konzentrierst, wirst du das Tempo nicht halten können.
C2: If you don't concentrate, you won't be able to keep up with the pace.
In its most basic sense, halten refers to physically holding onto something. For example, if you are carrying a heavy box, you might say 'Ich halte die Kiste' (I am holding the box). However, halten can also be used in a more abstract sense, such as when you 'hold' an opinion or belief. In this case, you might say 'Ich halte das für falsch' (I think that is wrong).
Another common use of halten is to indicate stopping or pausing. For instance, if you are walking down the street and someone stops you to ask for directions, you might say 'Können Sie bitte kurz halten?' (Can you please stop for a moment?). Similarly, if you are driving and need to come to a stop at a red light, you would say 'Ich muss an der Ampel halten' (I have to stop at the traffic light).
It's worth noting that halten is a versatile verb that can be used in a variety of contexts. Depending on the situation, it can take on different meanings and nuances. As with any language learning, the best way to get comfortable using halten is through practice and exposure to real-life situations where the word is commonly used.