Sometimes the cannon is fixed in position, and other times you have to use the force of firing it to push it into a spot where you can hit the ball.

有时大炮是固定的位置，其他时候你必须使用发射它的力量把它推到一个你可以击中球的点。

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This report described an Apache helicopter firing warning shots after coming under fire. Its reaction was described as “an escalation of force.”

该报告中描述了一架阿帕奇直升机在遭遇攻击后发射警示弹，而它的反应被形容为“火力升级”。

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Both NASA and the Air Force Office of Scientific Research have shown enough interest in the concept to fund initial rocket firing tests.

美国国家宇航局和美国空军科学研究办公室都对资助起初的火箭点火测试表现浓厚的兴趣。

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He took some very drastic actions of firing the whole police force and recreating it from scratch.

VOA: standard.2009.09.01

Many blamed Matt Lauer as the driving force behind her firing, and worse for the network, the ratings have continued to decline with the pairing of Lauer with Savannah Guthrie.

FORBES: Should NBC Let Ann Curry Flee To CNN?

Nevertheless, many of them acknowledge that the agreement may force Hamas to stop firing rockets across the border from Gaza, and welcome at least that aspect of it.

ECONOMIST: Israel and Palestinian unity

The commissioner will be responsible for the force's budget, and the hiring and firing of chief constables.

BBC: Conflict fears over PCC candidate Nicky Williams