石笔

shí bǐ
  • slate pencil
石笔石笔
石笔 [shí bǐ]
  • [slate pencil] 用软石或皂石制成、在石板上写字的笔

石笔[shí bǐ]
  1. 导轮、砂轮;金刚石洗石笔;

    Diamond washing Tutcheria spectabilis ;

  2. 受到损害最严重的包括蛤蚌和石笔海胆,它们的外骨骼在高水平的二氧化碳环境下溶解了。

    The biggest losers included clams and pencil urchins ; their exoskeletons dissolved at the highest CO2 levels .