Ballistics is the scientific study of how objects move when they are thrown or fired through the air — a stone, an arrow, a bullet from a gun. It asks how fast the object leaves, what path it takes, how it spins, and where it falls.

Ballistics is the scientific study of how objects move when they are thrown or fired through the airBallistics（彈道學）是研究物體被丟出或發射到空中之後怎麼移動的科學 a stone, an arrow, a bullet from a gun像石頭、箭，或是槍發射出去的子彈。 It asks how fast the object leaves它探討物體離開時的速度 what path it takes走的路徑 how it spins怎麼旋轉 and where it falls還有最後落在哪裡。

The army, the police, and people who make guns care about this. In crime work, a ballistics test can help match a bullet to a gun.

The army, the police, and people who make guns軍方、警方，還有製槍的人 care about this都很重視這門學問。 In crime work在刑事鑑識工作中 a ballistics test can help match a bullet to a gun彈道測試可以幫忙比對子彈是不是來自某把槍。

The word is formal and technical. You will meet it in news about weapons and in detective stories. It is the name of a subject, like physics, which is why it ends in -ics.

The word is formal and technical這個字很正式、也很專業。 You will meet it in news about weapons and in detective stories你會在講武器的新聞和偵探小說裡看到它。 It is the name of a subject, like physics這是一門學科的名字，就像physics（物理學） which is why it ends in -ics所以字尾才會是-ics。

A lab does a ballistics report. A person who shouts is not “doing ballistics.” That angry meaning lives in go ballistic, a different use of the related adjective.

A lab does a ballistics report實驗室會做彈道報告。 A person who shouts is not "doing ballistics."一個人在大吼大叫並不是'doing ballistics' That angry meaning lives in go ballistic那種生氣的意思是在'go ballistic'（暴怒）這個說法裡 a different use of the related adjective是相關形容詞的另一種用法。