And I assume that this is due to two factors: competition from other sites, and the increasing sophistication of merchants themselves about the possibilities of these sites.

我认为这里有两方面的因素：来自其他团购网站的竞争，以及供货商本身对于此类网站的精明估算。

youdao

The pollution over the past few weeks has reopened the question of whether improvements seen earlier in the year were due to economic factors, or the top-down diktats from Beijing.

过去几个星期的污染已重新点燃这样一个问题：今年早些时候看到的空气改善是由于经济因素，还是源于北京发出的自上而下的政令？

youdao

Low temperature pumpability can deteriorate significantly during oil's life cycle in the engine due to the influences from many factors.

受到各种因素的影响，在发动机整个使用过程中油品低温泵送性可能变得很差。

youdao

On its website, petrol company Shell said prices can vary from region to region due to "factors such as distance from the refinery or distribution terminal to the petrol station and the number of customers in the region".

BBC: Bedford mayor calls for 'boycott' of expensive petrol

Revenue hit a record high even though gold-mining output was down from the year-ago quarter due to factors such as mine sequencing and lower ore grades in certain mines.

FORBES: Update: Newmont Mining's Adjusted 3Q Earnings Rise

However the report does acknowledge the improvement in core performance from the banks, and says it is due to two main factors.

BBC: Skyline of Canary Wharf in London