它们以不同方式运作，但想像一下这种拥有橡皮筋动力发射装置的枪。

These work in different ways, but imagine one that has a rubber-band powered launcher.

youdao

它们以不同方式运作，但想像一下这种拥有橡皮筋动力发射装置的枪。

These work in different ways, but imagine one that has a rubber-band powered launcher.

youdao