基本解釋[地球科學]背負泵英漢例句雙語例句Our custom pump locks in the 'up' position making this lotion perfectly portable in a diaper bag, gym bag, or backpack without worrying about a mess.我們的定制壓嘴，可以很方便的裝在你的尿布包，運動包，或背包中。而不會造成溢出。backpack pump更多例句詞組短語短語backpack concentrator backpack suction pump 背負式采氣泵knapsack backpack pump 背負泵backpack pump更多詞組專業(yè)釋義地球科學背負泵