Engineers have met almost all of these goals, but not simultaneously in one product.
工程师们实现过几乎以上所有指标，但从未在一个产品上同时满足这些要求。
In part, this is a conundrum of wealth: though people may be earning more money to spend, they are not simultaneously earning more time to spend it in.
从某种程度上来说，这是富裕的一个难题：尽管人们可以赚更多钱买更多东西，但他们却没有更多时间花赚来的钱。
For example, you can proceed to develop a vaccine, but you do not simultaneously need to decide whether to proceed with immunization, what its scope will be and who priority recipients will be.
例如，可能着手研制疫苗，但并不需要同时决定是否进行接种，接种范围有多大以及优先考虑哪些接种者。
Propagation, both ways, not simultaneously.
传送，双向，非同时。
However, the increase of the two parameters above were not simultaneously, the increment of soil NO3-N accumulation was much higher than that of total N accumulation in wheat plants.
施用氮肥能提高小麦拔节期和成熟期植株全氮积累量和土壤NO3-N积累量，但两者并非同步增加，土壤NO3-N积累量增加的幅度远远大于植株全氮积累量的增长幅度。
However, the increase of the two parameters above were not simultaneously, the increment of soil NO3-N accumulation was much higher than that of total N accumulation in wheat plants.
施用氮肥能提高小麦拔节期和成熟期植株全氮积累量和土壤NO3-N积累量，但两者并非同步增加，土壤NO3-N积累量增加的幅度远远大于植株全氮积累量的增长幅度。
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