n. harvester that heads and threshes and cleans grain while moving across the field
v. add together from different sources
v. join for a common purpose or in a common action
词态变化
过去分词:combined
现在分词:combining
第三人称单数:combines
过去式:combined
复数形式:combines
常见例句
1
Combined with acetic acid.
2
join or combine or unite with others
3
it is present in all living cells in a combined form as a constituent of DNA and RNA and ADP and ATP and AMP
4
v expose to fresh air v aerate (sewage) so as to favor the growth of organisms that decompose organic matter v impregnate, combine, or supply with oxygen
5
(biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
