Meteorites Martian Believed Impact Mars Concluded Blasted Mars's

意群训练： Recently some scientist s have concluded tha t meteorites found on Earth and long believe d to have a Martian origi n might actuall y have been blasted free of Mars's gravit y by the impac t on Mars of other meteorites .

标志： /Recently/ some scientists have concluded that meteorites (found on Earth) and (long believed to have a Martian origin) might actually have been blasted /free of Mars's gravity/ /by the impact on Mars of other meteorites/.

译文： /近来/一些科学家 得出结论 ，（地球上发现的）并 （一直被认为是来自于火星的）陨石 有可能实际上是 /在其他的陨石对火星的冲击下/被炸 /离了火星的引力/。

解释： 这个句子难就难在以that引导的宾语从句。从句中的主语是meteorites ，修饰它的成分有两个，一个是（found on Earth），另一个是（long believed to have a Martian origin），两个并列的成分之间以and 相连接。注意，这里不能把原句理解成是meteorites (found on Earth) and meteorites (long believed to have a Martian origin）的省略形式：这个表达是说有两种陨石，一种是地球上发现的，另一种是来自火星的；原文所指的是同一批陨石的两个特征：发现于地球，来自于火星。

句子最后的by the impact on Mars of other meteorites读上去令人感到不舒服的原因，是the impact of other meteorites中的impact of被修饰impact的on Mars分隔开了。