A number of ( ie some ) problems have arisen.

It was plain to Mr Barclay that an emergency had arisen.

巴克莱先生知道问题非解决不可.

A whole host of difficulties has / have arisen.

出现了一大堆的困难.

The issues which here arisen are the classical debatable issues.

这儿出现的论题是古典的而又有争论余地的.

Meanwhile Malachy had arisen like another star in the North.

与此同时,玛拉基象又一颗巨星一样升起在北方.

Bertha's love, indeed, had finally disappeared as suddenly as it had arisen.

伯莎的爱情的确是消亡了, 消亡得和它爆发时一样突然.

The controversy has arisen over the text of the preamble to the unification treaty.

针对统一条约的序文出现了争论。

However, difficult questions have arisen when these conditions are not met.

然而当这些条件未被满足时, 即产生了难题.

A new difficulty has arisen.

出现了新的困难.

A new problem has arisen.

出现了新问题.

A great number of problems have arisen.

出现了许多问题.

During the night a great storm has arisen.

夜里来了一场大风暴.

A great clamour has arisen around the question of peace or war.

是和是战,闹得甚嚣尘上.

A new crisis has arisen.

新危机已经出现。

Again the question arises where the distribution should be cut off.

分布在何处截止这个问题又提出来了.

Twisting arises in boards through the presence of spiral or interlocking grain.

翘曲多发生在螺旋或交错纹理的板材中.

The question arises here; does initiation correspond to pre-neoplasia?

问题从这里提出: “始发阶段”是否相当于瘤前病变?

The singularity arises only formally, because we neglected the effect of damping.

这个奇异点的产生仅仅是形式上的, 因为我们忽略了阻尼的作用.

I will write and let you know if the occasion arises.

必要时我会写信告诉你的.

The birds also attack crops when the opportunity arises.

一有机会鸟儿们也会破坏庄稼。

Whenever there arises a controversy, he tries to keep his feet clean of it.

每当人们发生争议时, 他总是不想介入.