I have several coats but only one pair of trousers.

我有几件上衣，但只有一条裤子。

youdao

There was a time in my life when I owned only one pair of shoes - a size too small with holes in them.

我生命中有一段时间只有一双鞋子- 尺码偏小，上面还有很多洞。

youdao

Test results showed the homogenous error of sensitivity distribution of the sensor was 13%, which is much better than the capacitance sensor with only one pair of electrodes.

实验证明由该种“复合式极板”构成的电容式浓度传感器的检测场均匀性误差可达13%，远远优于单对极板的该项指标。

youdao

Seriously, I only have one pair of shoes because I only have one pair of feet.

说实话，我就只有一双鞋，因为我只有两只穿鞋的脚。

How many实战 - SpeakingMax英语口语达人

This way it's so much easier and needs only one pair of business shoes.

CNN: Beating the stress of business travel

Rookies got only one pair of cleats for the entire season.

FORBES: Magazine Article

The anti-stain wipes are good too, especially if you are travelling with only one pair of trousers (I should have mentioned that dark corduroys are better than light ones from this point of view).

ECONOMIST: Business travel