一位听众来信询问限定词 “no” 和介词 “without” 后应跟名词单数还是复数。比如： “没有糖，不加糖” 的英语表达方式是 “no sugar” 还是 “no sugars”，还是两者均成立？当 “without” 的后面跟可数名词单数时，“without” 和这个名词之间是不是必须加冠词？

It can be dangerous to go without sleeping, even for a day. Longer-term sleep deprivation can cause cognitive impairment, hallucinations, and other side effects. The longest recorded time without ...

It is likely that a person can survive between 1–2 months without food. However, it is difficult to determine the exact duration, and it is not advisable to attempt starvation diets. As many different ...