1·Vandalism used to be a rare occurrence here.
过去这里很少发生故意破坏公物的事。
—— 《牛津词典》
2·Whales and dolphins have been found with hind limbs; this rare occurrence is due to the reemergence of a trait they inherited from their terrestrial ancestors.
发现鲸和海豚身上有后肢；这种稀有的现象是由于它们在陆地上的祖先身上的特征再次被遗传。
3·Laughter was a rare occurrence in his classroom.
他的课堂上难得有笑声。
4·Fixed unable to drag capsized Rafts on rare occurrence.
固定无法拖动倾覆筏在罕见的发生。
5·This is rare occurrence as our climate seldom goes to extremes.
在我们这里，这种事情很少见，因为气候很少发生异常。
6·This is a rare occurrence as our climate seldom goes to extremes.
由于这里的气候很少出现极端，所以这是很罕见的情况。
7·The nine-sided faceted foot shape is an extremely rare occurrence.
底足有九个边，这样的设计非常少见。
8·But, as you noted, the opportunity to win a title is a rare occurrence.
但是，像你说的那样，夺冠机会很少发生。
9·However, this is a fairly rare occurrence, and it only wastes a little memory.
不过，这种情况极少发生，而且它只会浪费少量内存。
10·One day I received a call from my son in the middle of an afternoon, a rare occurrence.
一天中午，我接到了儿子的来电，平时他很少会在这个时间打来。