very rare
千载一遇───very rare
Summary of Background Data . Malignant paragangliomas are a very rare entity.───恶性神经节瘤是一非常少见的实体瘤.
must be stressed that this disease is very rare.───必须着重指出，这种病非常罕见。
It is very rare for Jeanne to be late.───珍妮很少迟到.
A prominent M + 2 H peak in EI spectra is a very rare phenomenon.───EI源出现M+2H峰是很罕见的现象.
Damage en route is very rare.───途中损坏情况极少.
Red squirrels are now very rare in Britain.───红色松鼠在英国已十分罕见了.
He spoke in a very rare and windy way.───他说话十分古怪,夸夸其谈.
But it was only under very rare circumstances that we did so.───但那只是在极其罕见的情况下我们才这样做.
These flowers are very rare in this country.
Red squirrels are now very rare in Britain.
Perfect numbers like perfect men are very rare. Rene Descartes
It is very rare for her to miss a day at school.
Some very rare birds inhabit our stretch of the river.