Pump-action
唧筒式的；压动式的
🧩 词语组成解析
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
action
['ækʃən]
n. 行动，活动;功能，作用;手段;[法]诉讼;
🗣️ 情景例句
I said I'd give her an answer in a few days ...
我说这几天给她回答……
Math major
专攻数学
and then only if we are very original.
就这也需要我们有独创的思想。