目前的证据仅仅是间接的。So far the evidence is only indirect.敌手之间的谈判必定是间接的。Negotiations between the enemies are of necessity indirect.这家公司的垮台将会给整个行业造成间接的负面影响。The collapse of the company will have repercussions for the whole industry...

“间接的”的英语可以翻译为：indirect，secondhand，backhanded，mediate，backstair ...