From the embassy I learned that last night people of unclear identity were firing machine guns into apartment buildings, and in the south of Tunisia two Chinese were accidentally injured.

而从大使馆得到的消息，昨天晚上有不明身体的人用机枪扫射居民楼，而在突尼斯南部，也有两名中国人被误伤。

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The researchers used a machine called an "electroretinogram" to test the field of vision - firing a tiny beam of light at the shark in a darkened tank from all directions.

研究人员利用“网膜电图”机测试视野——在一个黑暗的箱子里从各方位向鲨鱼发射一丝微弱的光。

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First the machine takes off and hovers above the ground by firing downward-facing nozzles.

首先这种机器启动后加热朝下的喷嘴，会在地上盘旋。

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Firing machine guns from the beds of pickups, Chad's commandos delivered Mr. Gadhafi one of his most decisive defeats in his 42-year rule.

WSJ: Chad Army Says It Killed Key Terrorists

Evidence suggests he was hit by a fellow soldier who was firing a machine gun at a stationary target.

BBC: Michael Maguire

Evidence suggests a fellow soldier firing a machine gun at a designated target placed on the range hit Ranger Maguire.

BBC: Ranger Michael Maguire