Most 1st age class rhizomes of present year developed from the 2nd age classes.

当年形成的1龄级根茎大多是从2龄级根茎上产生。

youdao

In eighteen sixty, at the age of seventeen, Mary began classes at the Pennsylvania Academy of the Fine Arts.

VOA: special.2009.07.12

She said her school had put staff training on hold and would have to do have mixed age classes to bridge the funding gap.

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Each tournament is broken down into different weight and age classes, from the junior competition (those under 21) to the highly-anticipated heavyweight class (any weight above 88kg).

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She says the numbers involved are small but they cross all social classes and age groups.

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