on the grounds of desertion【律】以被遗弃为理由
She could get a divorce on the grounds of desertion.她可以以遭到遗弃为理由获准离婚。
3.(by supporters, friends)背弃;离弃
a mass desertion of the Party by the electorate选民大规模地放弃支持该党派
possible further desertions from the party at its conference在其大会上可能发生的更多的脱党情况