These narrative reversions reach a surprising effect of ups and downs .

这些叙事逆转在叙事上达到了跌宕起伏的惊奇效果。

Estates in expectancy are of two sorts , those created by act of the parties , called " remainders " , and those created by operation of law , called " reversions " .

可期待的地产有两类，依当事人行为设立的，称残余权；依法律设定的，称复归权。