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

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.

The ship has to run into the harbor when the sudden storm arises.

风暴骤起,轮船只得急忙躲进海港.

That is where the question arises.

这就是问题的所在.

The concept of cat arises from many cats we see.

猫的概念是从我们看见的许多猫中产生的.

From time to time an atmosphere of compromise arises.

妥协的空气时起时伏.

The problem of pollution arises along with the rapid development of industry.

随着工业的迅速发展,产生了污染问题.

This type of inefficiency arises because workers and management are ill-equipped.

出现此种低效率是因为工人与管理层都能力不足.

Any unexpected circumstance that arises may catalyze a sudden escalation of violence.

任何突如其来的情况都可能造成暴力骤然升级。