临床试验中,这款疫苗的效果比预期的更为积极。

临床试验中,这款疫苗的效果比预期的更为积极。

In clinical trials, the vaccine showed more positive results than anticipated.

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In clinical trials, the vaccine showed more positive results than anticipated.

more positive + than + 过去分词(anticipated),以缩减从句(省略了 it was)构成比较。

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