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singly造句
61. Each flower may have one or more carpels borne singly apocarpous gynoecium or gynoecium. 62. Coccus (pl. cocci) A spherical-shaped bacterium. Cocci may be found singly, in pairs (e. g. Diplococcus), or chains (e. g. Streptococcus), or in regularly or irregularly packed clusters.