变换: to transform, to convert, to vary, to alternate, a transformation...
大学: university, college...
近日: (in) the past few days, recently, (within) the next few days...
暑假: summer vacation...
夹杂: to mix together (disparate substances), to mingle, a mix, to be tangled up with...
信: letter, true, to believe, sign, evidence...
捡: to pick up, to collect, to gather...
梯子: ladder, stepladder...
演技: acting, performing skills...
同人: people from the same workplace or profession, co-worker, colleague, pop culture enthusiasts who create fan fiction etc...