Q: sweating their balls off とはどういう意味ですか?
A: It is a very rude way to say that they were either extremely hot and sweaty, or that they were so nervous or anxious that they were sweating a lot. Depending on the context.
Q: I am sweating! I have to turn the AC off when I vlog とはどういう意味ですか?
A: You're really hot! You have to turn on the air conditioning when you make videos about your day.
Q: without sweating your face off とはどういう意味ですか?
A: Without putting in overly excessive effort
Q: sweating とはどういう意味ですか?
Q: she trained, sweating teenagers .. とはどういう意味ですか?
A: Can you give the context? Is it something like "Gym teachers train sweating teenagers."?


Q: i am starting sweating right now と I am starting to sweat right now はどう違いますか?
A: First is wrong but the second is correct


Q: is it correct to say that I start sweating before long after I going out. は 英語 (アメリカ) で何と言いますか?
A: Not sure what your full sentence is but: "I start sweating quickly after going out"


Q: "I'm sweating so bad"
can I use "bad" like that to mean "a lot"?
A: Yes, but saying "so good" is usually a joke.

Example: I am exercising with my friend. We are working really hard. My friend says "Wow, my arms hurt so good!" or "Wow, I'm sweating good now!" It means, "This is really hard, but I am still enjoying it!"
Q: " I was sweating a lot, I ended up sitting in any cafe hiding myself from the sweltering hot weather drinking a cup of coffee. " この表現は自然ですか?
A: Change any to a
Q: That reminds me of you all sweating from doing zumba dance last time この表現は自然ですか?
A: This sounds 조금 better.

That reminds me of the last time you all sweated from Zumba dancing.
Q: I'm sweating like a pig on a summer day この表現は自然ですか?
A: "I'm sweating like a pig on this hot summer day" would sound a little more natural.
Q: You're sweating on the forehead. Want me to lend you my handkerchief?
A: "Your forehead is sweating." When a part of our body is unusual, we often refer to it as the subject. "Your eyes are pretty, your hand is hurt, your legs are long, etc."