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吸盘 suction cup

Suction cup diameter

吸盘suction cup属类：【物品名称】-〖机械部件〗-[喷雾器部件]

你可以译为suction cup， 就是那种用橡胶制成圆锥状的可以吸附在光滑平面上东西。请参考！

它们用(吸盘吸住)牡蛎上下的外壳然后向外拉,直到掰开为止。They do this by (attaching their sucking disks) to either half of the oyster shell and pulling until the shell eventually opens.