查询词典 difficult to

If a thing is difficult to be accomplished by thyself, do not think that it is impossible for man: but if anything is possible for man and conformable to his nature, think that this can be attained by thyself too.

如果有一件事是你难于完成的，不要认为它对于人也是不可能的，但如果什么事对于人是可能的，是合乎他的本性的，那么想来这也是你能达到的。

When using restricted maximum likelihood for parameter estimation, we need to get the minimum of a function. But if the expression of the function is complicated, it is difficult to obtain the derivatives of the function. We introduced conjugate direction method which avoided the derivatives.

在用限制极大似然法估计参数时，需解决函数的极小化问题，而当函数的表达式较为复杂时，将难以获得其偏导数，本文给出的共轭方向法，避开了求导问题。

The emergence of this kind of irregular, Conn., is difficult to control and to avoid.

这类鬼影的呈现不次序，很难把持和制止。

It is difficult to get such conspicuous effect if we use the traditional method of giving examples to state.

由于定量方法的运用，我们对这一现象作了充分而明怏的揭示。

The new central government is no doubt the most bold and transparent to date, but its chronic afflictions run too deep, and in the short term it will be very difficult to consummately resolve them.

新的中央政府无疑是有史以来最英明的，但痼疾太深了，短期很难彻底解决。

For example, the TTT diagram for a 0.8% C steel is a continuous curve although there is both a pearlite and bainite reaction occurring, but it is difficult to disentangle the reactions sufficiently to study their kinetics.

例如，TTT图中，0.8 ％的碳钢是一个连续的曲线虽然是珠光体和贝氏体反应都发生，但是难以将这两个反应分开而充分研究其各自的动力学。

These are questions which it is difficult to answer. For the facts seem to contradict themselves.

这些都是很难回答的问题，因为事实似乎互相矛盾。

Well, here is an opportunity made to your hand, and it would be difficult to contrive a better

好了，这是一个送上门来的机会，而且也很难再找到一个更好的时机了。

Also, in the way of life, it is difficult to execute if there is no contrived force at all to guide the development of things.

同样地，在人生的道路上，完全不运用人力去导引事情的发展，也是很难执行的。

We all know it's difficult to convince them to give up the plan.

我们都知道说服他放弃计划是很困难的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。