英语
德语
pre·serva·tive [prɪˈzɜ:vətɪv, 美 -ˈzɜ:rvət̬-] 名词
preˈ·serva·tive-free 形 不变的
ˈwood pre·ser·va·tive 名词
preservative 名词
PONS词典中的例句（已经编辑处理）
单语范例（未经PONS编辑处理）
When preservatives were not present in some of the extracts, laboratory tests found the natural extracts had no natural antimicrobial attributes of their own.
en.wikipedia.org Most pre-sliced cold cuts are higher in fat, nitrates, and sodium than those that are sliced to order, as a larger exposed surface requires stronger preservatives.
en.wikipedia.org Aseptic food preservation methods allow processed food to keep for long periods of time without preservatives, as long as they are not opened.
en.wikipedia.org Others have been used as wood preservatives, as rubber and plastic additives, for capacitor dielectrics and in lubricants.
en.wikipedia.org However, dried products without these preservatives may require refrigeration or freezing to ensure a long period of storage.
en.wikipedia.org