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。

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。

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

神的爱持续地是我的安慰之源。

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。

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。