困难: difficulty; difficult; hard; ...的: 4次方是 The fourth power of 2 i ...运行: move; be in motion; run; wor ...条件: condition; term; factor困难运行条件: severe service conditions艰险的运行条件: severe service condition运行条件: operating conditions; operational conditions; service condition标准运行条件: standard operating conditions standard temperature and pressure运行条件计划: operating conditions planning正常运行条件: normal running conditions正规运行条件: useful service conditions最佳运行条件: optimum operating condition困难的土壤条件: difficult ground conditions困难的: burdensome; difficile; difficult; hard; heavy; labourious; mad; man-sized; painful; pinched; rugged; staggering; tough; troublesome; uncomfortabl; untoward; uphill难的,困难的: difficult卫星运行条件模拟器: satellite simulator在一般运行条件下工作: medium duty发音困难的: crackjaw呼吸困难的: dyspneal; dyspneic; dyspnic; dyspnoeic驾驶困难的: unhandy坚韧的;困难的: tough (l04)经济困难的: hard pressed困难的;艰巨的: difficult, hard困难的工作: difficult work; large order困难的任务: difficult task