英漢例句雙語例句At six to seven years old more than half of the children were evaluated for their sensitivity to common allergens such as dust mites, ragweed and cats.到6至7嵗時(shí)，這835名兒童中，過半的人都有各種各樣的過敏癥，對(duì)常見的過敏原如塵蟎，豚草和貓等産生過敏。Objective To compare proteins in the extract of Artemisia pollen and ragweed pollen and to examine the existance of common antigen between the two types of pollens.目的比較艾蒿花粉和豚草花粉粗浸液中的蛋白質(zhì)組分，探討兩者間有無共同抗原。common ragweed更多例句