做证: testify, bear witness (same as 作证)...
住院: to be in hospital, to be hospitalized...
衰退: to decline, to fall, to drop, to falter, a decline, recession (in economics)...
预订: to place an order, to book ahead...
委婉: tactful, euphemistic, (of voice etc) suave, soft...
误: mistake, error, to miss, to harm, to delay, to neglect, mistakenly...
再三: over and over again, again and again...
需要: to need, to want, to demand, to require, requirement, need...
上流: upper class...