How can I deal with an authoritarian boss and teammates who belittle my questions at work?

I am an international student working in an engineering lab. I come from a different background, so I sometimes need extra context to get up to speed. But when I ask clarifying questions, I either get no response or am made to feel lesser for asking. How do I navigate this without alienating my team?
(Small example: My team mates laugh at my work and try to prove me wrong)
How can I deal with an authoritarian boss and teammates who belittle my questions at work?
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