add difficulty to difficulty -- extremely arduous;doubly difficult;extremely difficult ;

生命短暂, 艺术苦长, 机会稍纵即逝, 经验难以信赖, 判断更是 难上加难.
来源:互联网摘选The farmer wants to learn to raise and breed the technology is extremely difficult more.
农民要想学会饲养和繁殖技术更是难上加难.
来源:互联网摘选Doing so when an entire industry is going in the same direction is harder still.
如果整个行业也朝着同样的方向发展,加以反对就会难上加难.
来源:互联网摘选Every channel has different price method, cause government extremely difficult.
每个渠道有不同的定价方法, 导致管理难上加难.
来源:互联网摘选That makes sampling them harder, even if you bother to look in the first place.
这使得样本采集难上加难, 即便你能耐着性子待在最初的地点观察.
来源:互联网摘选To complicate their problems further, the ship and ground anti-aircraft fire had become heavy.
难上加难的是舰上和地面上的 高射炮 火比先前更加猛烈了.
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