Sodas typically use the artificial sweeteners aspartame and acesulfame potassium, aka ace-k.

苏打水通常使用人工甜味剂阿斯巴甜和安赛蜜钾，也就是ace-k。

Not all sugar-free carbonated drinks contain alternative sweeteners, so check the ingredient list for aspartame, saccharin, sucaralose and acesulfame potassium.

并非所有无糖碳酸饮料都含有替代甜味剂，因此请检查成分表中的阿斯巴甜、糖精、糖醛糖和安赛蜜。

Sweeteners have become such a common part of our diet that environmental scientists have started looking for traces of them — particularly acesulfame potassium, which passes through the body largely undigested — as a marker for human waste in lakes and rivers.

甜味剂已经成为我们饮食中普遍存在的成分，以至于环境科学家开始寻找它们的痕迹，特别是钾型甜味剂，因为这种成分在经过消化后基本上不会被吸收，所以可以作为检测湖泊和河流中人类废物的标志。