That’s why this new policy also includes directions to update the current U.S. Government Orbital Debris Mitigation Standard Practices, which already require any entity that launches a satellite or spacecraft to vigorously analyze the likelihood that any of their actions, from an unexpected failure or normal operations, will create more space debris.
【句子拆分】
主語 That
謂語 is
賓語 why this new policy also includes directions
【單詞解析】
單詞
entity
音標
'?nt?ti
中文詞意
n. 實體;存在;本質
【語法分析】
這句話是個主系表句型,主語"That",系詞"is",表語位置上是一個從句"why this new policy also includes directions",后面的不定式"to update..."是做定語修飾前面的"directions","which"引導非限定性定語從句修飾"directions",定語從句中第一個"that"同樣是定語從句,它用來修飾"entity"。第二個"that"是引導同位語從句。
這句話首先注意"which"引導的定語從句并不是修飾緊挨著的"the current US Goverment Orbital Debris Mitigation Standard Practices",而是前面的"directions",這種分離修飾的情況要注意。我們再來看"which"引導的定語從句中的謂語動詞部分"require",這個動詞的使用方法是"require sb. to do sth."即“要求某人做某事”,當中包含的定語從句就是"that launches a satellite or spacecraft",前面"require"用法中的不定時在后面,也就是"to vigorously analyze the likelihood",而你其實可以看成"which already require any entity to vigorously analyze the likelihood",這樣就清楚多了。