参观: to look around, to tour, to visit...
独裁: dictatorship...
优质: excellent quality...
补充: to replenish, to supplement, to complement, additional, supplementary...
体质: constitution...
顶级: top-notch, first-rate...
国际: international...
讲课: teach, lecture...
押金: deposit, down payment...
浮力: buoyancy...