Fins are a feature specific to fish.鱼鳍是鱼类特有的特征.He could see their wide, flattened, shovel - pointed heads now and their white tipped wide pectoral fins.他这时看得见它们那又宽又扁的铲子形的头,和尖端呈白色的宽阔的胸鳍.They were flapping their bat - like...
失业率上升，相对应的是生产率进一步提高。The obverse of rising unemployment is continued gains in productivity.工资的涨幅高过了生产率增长的速度，从而消耗了利润所得。Wages were rising faster than productivity and this was eating into profits.第三季度的结果表明生产率持续上升。The third-...