1 intercross subject,cross subject
2 set something on fire
3 first rate ,first class,both are correct
4 心理疾病
5 My hometown has happy associations for me
6 explode to (cause to) burst violently
blow to cause something to be destroyed by a bomb,technical failure,etc
7 insulate to protect someone or something from outside influences
isolate to separate something or someone from other things or people with which they are joined or mixed,or to keep them separate
8 inrude (cannot be found in the dictionary)
impose 1 to officially force a rule,tax,punishment,etc.to be obeyed or received
2 to force someone to accept something,especially a belief or way of living
9 byword a person or thing that is very closely connected with a particular quality
idioma group of words in a fixed order that have a particular meaning that is different from the meanings of each word understood on its own:
10 (cannot be found in the dictionary)