1、explanation

解释;说明

She told the court she would give a full explanation of the prosecution's decision on Monday.

她告诉法庭她会在星期一对原告方的决定作出全面解释。

There was a hint of schoolboy shyness in his explanation.

他的解释中带有一丝学生的羞涩。

理由；原因

The deputy airport manager said there was no apparent explanation for the crash.

机场副经理说那次飞机失事没有明显的原因。

Digging further into the medical literature, I found out there was a scientific explanation for all this.

进一步翻阅医学文献后我发现，这些都是有科学解释的。

阐述;详细的说明

Haig was immediately impressed by Charteris's expertise and by his lucid explanation of the work.

查特里斯的专业知识和他对作品浅显易懂的阐释立即给黑格留下了深刻印象。

2、constant

不断的;重复的;一直存在的

She suggests that women are under constant pressure to be abnormally thin.

她暗示说女性总是处在保持身材异常瘦削的压力之下。

Inflation is a constant threat.

通货膨胀始终是个威胁。

恒定物;常数；常量；常项

In the world of fashion it sometimes seems that the only constant is ceaseless change.

在时装界，有时似乎唯一永恒不变的东西就是不断的变化。

Two significant constants have been found in a number of research studies.

若干研究已经发现了两个重要常量。