The lines were so finely etched as to be invisible from a distance.蚀刻的线条非常精细, 离远点几乎看不到。

microscopic hairs, invisible to the naked eye裸眼看不到的微细毛发

The hearing aid is simple to fit and virtually invisible when worn.这款助听器佩戴简便, 而且戴上后几乎看不出来。

Parents fear they might overstep these invisible boundaries.父母们害怕他们会无意间跨过这些无形的界限。

The problems of the poor are largely invisible.穷人的问题大都无人看到。

Insurance is a key part of Britain’s invisible export earnings.保险是英国无形输出收入的重要组成部分。

The next five years could see a similar cumulative trade deficit but a much smaller invisible surplus.接下来五年内将会有相似的累积贸易逆差, 但无形盈余会大大减少。

These service exports are sometimes called invisibles.这些服务输出有时被称为无形贸易。