微不足道的英文：
negligible
insignificant

参考例句：

a potty little house
一间微不足道的房子

an inconsiderable amount of money
为数微不足道的款项

Trivial;unimportant;petty
微不足道的;无足轻重的;小的

peanut politicians.
微不足道的政客们

Knock a clock down for a trifling sum.
以微不足道的价格拍卖掉了一只钟。

The body's annual intake of metallic iron is infinitesimal.
人体对金属铁的年摄入量是微不足道的。

It was comic that a scrubby little Welsh member should look at me like that
一个微不足道的威尔士小议员竟然这样看着我，真是可笑。

Let us glance briefly at the role in our economy of "infinitesimal businesses"
让我们概略地看一下“微不足道的企业”在我们经济中起着什么样的作用。

Of little importance;trivial.
不重要的;微不足道的

some twopenny-halfpenny little reporter
某个微不足道的记者.

negligible是什么意思：
adj. 微不足道的，可忽略不计的

negligent misrepresentation
疏忽的失实陈述

The capacitive effects are negligible.
电容的影响可以忽略不计。

Their losses were negligible.
他们的损失有限。

The accident was caused by the negligence of the driver.
事故是由司机的疏忽造成的。

This will have a negligible effect on the temperature.
这对温度的影响将是微乎其微的。

insignificant是什么意思：
adj. 无关重要的，微不足道的，

In winter the effect was found to be insignificant.
在冬季，这种作用是不明显的。

In 1949 Bonn was a small, insignificant city.
1949 年时波恩还是个无足轻重的小城市。

The effect of type of sizing applicator is insignificant
浸润器的类型的影响不显著。

This problem was insignificant compared to others she faced.
这一问题与她面临的其他问题比较起来算不得什么。

Do not despise an insignificant enemy or a slight wound.
不要轻视一个微不足道的敌人或一处小伤。