A minute, round particle composed of RNA and protein found in the cytoplasm of living cells and active in the synthesis of proteins.

一种微小圆形的由rna及蛋白质构成的微粒，发现于活细胞的细胞质中，且活跃于蛋白质的合成中。

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As t increases, this angle increases and the particle goes round and round.

随着 t 的增加,这个角度也在增大,这个质点不停地转圈

耶鲁公开课 - 基础物理课程节选

The ALA analyzed the data based on ozone pollution, short-term particle pollution and year-round particle pollution.

FORBES: Life

For that reason Forbes focused on the metros most affected by year-round particle pollution for this list.

FORBES: Magazine Article

The only city in the top 10 to actually get worse in terms of year-round particle pollution levels was Bakersfield.

FORBES: Magazine Article