snobbery
n[U]
(derog 贬) behaviour, language, etc characteristic of a snob 势利的行为、 语言等
They considered her behaviour a shameful piece of snobbery. 他们认为她为人势利, 行为可耻.
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%,它就要燃烧。
So, celebrate your success, and invite your parents to celebrate with you, however hard it may be for them. If you continue to be excited about your future, you may come to educate your parents in the same way.