Should he reason with unprofitable talk? or with speeches wherewith he can do no good?

...an endless, unprofitable argument...

没完没了的无用争论

He makes some unprofitable speculations.

他在做些无利可图的投机生意.

unprofitable companies

不赚钱的公司

In fact, his business career had distinctly unpromising beginnings...

事实上，他的经商生涯从初期就明显前景暗淡。

India's National Rural Employment Guarantee Act, or NREGA, seemed unpromising from its inception.

印度的《全国农村就业保障法》(NREGA)一开始显得毫无希望.

Among these were a few dark brown beans that looked like almonds and seemed unpromising.

其中有一些类似杏仁,看似不起眼的咖啡色豆子.

You always say that girls grow up definitely unpromising.

您经常说女孩长大肯定没出息.

Tintin was born in this unpromising environment, in a weekly children's supplement , Le Petit Vingtieme.

丁丁就是在这种毫无希望的环境中诞生的, 最初刊载于二十世纪报的每周儿童副刊上.

an unpromising place for a picnic

不太理想的野餐地点

Their land looked so unpromising that the colonists eventually gave most of it back.

他们的土地看上去日后没什么用途，所以殖民者最终把大部分都归还给了他们。

It also diverts computational cycles away from unpromising areas.

它还把计算周期从没有希望的区转移出来.

And so, after its unpromising beginning, this ends as a rather beautiful book — about Africans.

就这样, 即便开头不被看好, 但终究本书不失为写非洲人的佳作.

I'm just not satisfied with his unpromising manner.

我就看不上他那个没出息的样子!

Passepartout was enraged beyond expression by the unpropitious weather.

至于路路通,我们可以想象,在这场恼人的暴风雨中,他那种无法抑止的愤怒会达到什么程度.

To avoid this error, unprotect the workbook before it is saved as a Web page.

若要避免此错误，请在将工作簿另存为网页之前，取消对工作簿的保护。

Objective : To evaluate the safety and efficacy of selected artery stenosis on unprotected left main stenting.

目的: 评价无保护左主干病变选择性支架置入术的临床疗效.

Sudden bursts of solar radiation can kill an unprotected spacewalker.

一阵来自太阳的辐射可能夺去一个没有保护的太空漫步者的生命.

However, none address the question of how to partition that fat into unprotected and protected sources.

然而, 没有一种方法提出怎样将脂肪分成未保护源和保护源的问题.

The majority of them result from unprotected skin exposure to UV radiation.

它们中的大部分都发生于暴露于紫外线的未加保护的皮肤.

Our aggression has to go somewhere, and many turn it against themselves, the only unprotected target.

我们的攻击性要有一个宣泄的地方, 很多人转为针对自己, 唯一不受保护的目标.