Not everyone agrees. Michael Worobey, a virologist at the University of Arizona and another author of the Science paper, said backdating the molecular clock, which he did by comparing the 1959 blood sample with the only other known early one — a paraffin-embedded lymph node from 1960, also from Kinshasa — suggested that the virus emerged closer to 1910, when syringes were handmade, expensive and rare.
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Decorated strigils were also relatively expensive and rare, especially in Britain.
装饰刮身板也相对昂贵和稀有，尤其是在英国。
You might begin with recommendations from his list, buying expensive and rare, and allowing him nice gulps to start.
你可以根据他推荐的酒单，买一些价格不菲的稀有葡萄酒，让他开始对你产生好感。
The rare and expensive dye for cloth, Tyrian purple, complemented another famous local product, fine linen.
提利亚紫色是一种罕见而昂贵的布料染料，它使另一个著名的地方产品——细亚麻布——看起来更完美。
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