《中英對照讀新聞》 Detection of possible N. Korea missile attacks becomes harder－偵測北韓可能的飛彈攻擊之難度變大
North Korea is changing the locations for its ballistic missile tests to show the United States it can fire missiles anytime anywhere, analysts said Thursday.
North Korea has launched missiles from 20 different sites since 1984, making it harder for South Korea and the U.S. to detect possible missile strikes in advance.
South Korea seeks to build a three-pronged defense system by 2020, including the Kill Chain aimed at launching pre-emptive strikes on Pyongyang’s nuclear and missile facilities if Seoul is under imminent threat.
The state carried out 115 tests, including the firing of a Hwasong-12 intermediate-range ballistic missile at a launch site near Pyongyang Sunan International Airport, Tuesday. Kangwon Province has the most test sites.
detect：及物動詞，察覺、偵測、發現。名詞為detection。Radar equipment is used to detect enemy aircraft.（雷達設備用以偵察敵機。）
in advance：片語，預先、提前。If you are going to come, please inform me in advance.（如果你打算來，請先告知我。）
pronged：形容詞，分岔（枝）的、有（……）方面的，通常前面會加數詞來形成複合字。The government has announced a two-pronged strategy to tackle the problem.（為處理這個問題，政府已宣布一個雙管齊下的策略。）