occurs

An explosion will probably occur at any minute.

炸弹随时可能爆炸。

When melasma occurs, melanocytes in certain areas overproduce melanin.

当发生黄褐，黑色素细胞某些领域产生过量黑色素。

The word “gratitude” did not occur in his words.

“感激”两字话中是见不到。

Police said that the blast occurred at 9 a.m.

警方说这次爆炸发生上午九点。

Who was at the helm when the collision occurred?

当碰撞发生时,谁掌舵?

At Scinto 6 uranium occurs in much altered dolerite below the unconformity.

“辛托6”铀矿体产于不整合面之下变质甚深粒玄岩中。

It occurs to me that example is always more efficacious than precept.

我想到身教重于言教。

Rubral tremor is a rare movement disorder that occurs typically with midbrain damage.

摘要红颤抖症是一种少见运动疾患，它发生通常和中脑病变有关。

If urethral obstruction occurs, congenital megaurethra is lethal without patent urachus or rectoesical fistula.

如果存尿道梗阻，先天性巨尿道即便没有脐尿管未闭或直肠膀胱瘘也是致死性。

Rocky Mountain spotted fever is a rickettsial disease that occurs in dogs and humans.

犬落基山是一种人犬共患立克次体病。

A seismoscope is an apparatus or device which only indicates that an earthquake has occurred.

验震器是仅仅指示地震发生仪器或装置。

Surgery is the only choice of treatment if aspiration pneumonia, mediastinitis or other infections occur.

一旦病患出现感染症状时，手术治疗是唯一选择。

Pyrite is more abundant and cobaltiferous and occurs in heavy patches in the sulfide mass.

黄铁矿很多，并且含钴，硫化物块体中成稠密块。

The diversity of temperature is an important factor for tympanites to occur in highway roadbed.

温度差异是高原冻土地区公路路基发生翻浆一个重要因子。

Salt occurs naturally in sea water.

盐天然存于海水中。

Dueling occurs in his writings passim.

决斗作品中到处可见。

I hope this won't occur again.

我希望不要再发生这种事情。

Opportunities for learning occur spontaneously every day.

学习机会每天都会自然而然地出现。

Very often tragedies or near tragedies occurred.

悲剧或近乎悲剧事经常发生。

A new outbreak of smallpox occurred in 1928.

1928 年爆发了新一轮天花。