Hey there! How's it going? This is a common greeting in English that can be tricky to translate naturally.
Let's touch base next week - A business expression meaning to make contact or have a brief meeting.
That's lit! - Slang meaning something is exciting or excellent.
I'm feeling under the weather - An idiom meaning to feel slightly ill.
Break a leg! - A theatrical way to say "good luck" (but never translate literally!).