Noun:

1. a cup-shaped device (made of rubber, glass, or plastic) that produces a partial vacuum; used to adhere or draw something to a surface

suctionn.吸；吸入；吸水管v.抽吸；吸出suction mould真空成形, 真空铸造suction plate吸板suction drain吸入排水suction panel吸入面板suction gauge吸入压力表suction elbow吸气肘管suction plant抽吸泵站,吸尘装置suction piece进气管,吸入连接管suction blade抽气轮叶suction basin抽水池

1. The adhesive on the back of this suction cup mount is sticky.
   吸盘装置后面的粘合剂非常粘。
2. I only know that by observing that the suction cup feet silkworms in order to ensure that they can more firmly adsorbed on the leaves on the mulberry leaves to eat ah!
   通过观察我才知道，原来蚕宝宝脚上的吸盘是为了保证它们能够更稳固地吸附在桑叶上吃桑叶啊！