my shot:

1. 汉译英：

马里兰州史密斯堡（Smithsburg）一家制造厂发生枪击案，目前已经至少3人死亡，一名州警受伤，其它伤亡人数暂时不详。
At least three people have been killed and a state trooper injured in a shooting at a manufacturing plant in Fort Smithsburg, Maryland.

2. 英译汉：

Pressure mounts on Senate to act on gun safety amid Republican resistance由于共和党的抵抗，参议院对枪支安全采取行动的压力越来越大。

3. Idiom：Give it shot.
试一下
Come on kid, give it a shot.