They have been pronounced by an expert to be of a rare variety and of considerable value.

这些珠子经过内行人看过，说是稀有之宝，价值很高。

The next item on his list was to give orders for some fruit-trees, of a rare variety, to be deliverable at his country-seat in the ensuing autumn.

他清单上的下一项是订购一些稀有品种的果树， 这些果树将在随后的秋天交付到他的乡下所在地。