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1·The threat of losing their jobs is a constant source of worry to them.

丢掉工作的威胁时常使他们忧心忡忡。《牛津词典》

2·Throughout the house, the views are a constant source of surprise and delight.

整个房子，目之所及不停带来惊奇和欣喜。《柯林斯英汉双解大词典》

3·Learning to be mature and sensible can prevent us from becoming a constant source of worry to them.

学着变得成熟和理智可以防止他们不断为我们担心。

4·God's love is a constant source of comfort to me.

神的爱持续地是我的安慰之源。

5·Many in the US saw Mexico as a constant source of instability.

很多美国人认为墨西哥是造成美国不稳定的根源之一。

6·A constant source of debate regarding loop performance is which loop to use.

循环性能争论的源头是应当选用哪种循环。

7·Body requires a constant source of energy, most of which is derived from oxidation of glucose.

葡萄糖氧化持续供给机体大量的能量。

8·This paper introduces a kind of practical Laser constant source with high stability based on MCU.

本文介绍了一种实用型的基于单片机的高稳定度半导体激光器恒流源。

9·Clothing, dining out, and miscellaneous expenses are a constant source of frustration for working mothers.

服装，外出用餐，和杂项开支是一个常数的来源感到沮丧，为有工作的母亲。

10·Platform changes may be exciting for the users, but they are a constant source of pain for the administrators.

对于用户而言，平台的改变总让人激动不已；然而对于管理人员而言，却始终是痛苦之源。