这种火箭可以解决频繁补给燃料这一问题。
这种火箭需要携带的燃料也减少了，并且不需要化学氧化剂。
It thus needs to carry less fuel than a rocket, and no chemical oxidant to burn that fuel, as a rocket would.
以色列表示，为了制止这种火箭袭击，他们除了对哈马斯发动进攻之外别无选择。
Israel said it had no choice but to launch an offensive against Hamas to stop such rocket attacks.
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