protracted and ard uous nature 长期性与艰巨性
The protracted nature of the commencement speech did not sit well with the restless group of recent graduates.
毕业典礼演讲的时间太长,让这群焦躁不安的应届毕业生很不舒服。
We have to resistant to the risk of the plant genetic engineering, its protracted nature and unpredictable.
由于植物基因工程的风险及这种风险的长期性、不可预测性,我们必须防患于未然。
The employment relationship of the internal labor market is of the protracted nature and that of the recessive contract.
内部劳动力市场的雇用关系具有长期性和隐性合约的性质,并实行有效的内部激励机制。
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