trajectory 復習

　US President Donald Trump has issued a blunt warning to North Korea's leader Kim Jong-un in an address to South Korea's parliament.

　"Do not underestimate us. Do not try us," he said, while also condemning the "dark fantasy" of life in the North.

　He addressed Mr Kim saying "the weapons you are acquiring are not making you safer", and urged other nations to join forces to stop Pyongyang.

　The US leader is in South Korea as part of a five-nation tour of Asia.

　Pyongyang's nuclear ambitions have been high on Mr Trump's agenda throughout this trip. Over the past year North Korea has carried out missile tests in defiance of UN sanctions and in September conducted its sixth and biggest nuclear test. …

　Mr Trump spent a significant portion of his speech paying tribute to the achievements of the South since the Korean War, which cemented the division of North and South Korea.

　He contrasted this with the "horror of life" in North Korea and said their separate trajectories were "a tragic experiment in the laboratory of history”.

"The more successful South Korea becomes, the more decisively you discredit the dark fantasy at the heart of the Kim regime," he told lawmakers. (Skip the rest)

http://www.bbc.com/news/world-asia-41910167

　今回取り上げる語は、trajectory /trədʒéktəri/ です。

　まず意味を確認します。『ジーニアス英和大辞典』(大修館)をみると、「(1)弾道、軌道<特に重力の作用で弾道・ロケット・惑星などの描く軌跡>; 経路、道筋、(2)[数学・幾何]軌道 」とあります。

　次に語源を確認します。Oxford Dictionary of English (2nd Edition Revised)をみると、“late 17th cent. : from modern Latin trajectoria (feminine), from Latin traject- ‘thrown across’, from the verb traicere, from trans- ‘across’ + jacere ‘to throw’ ”とあります。

　最後にこの語に意味が近い orbit との比較をします。LDOCEでみると、trajectory は “(1)the curved path of an object that has been fired or thrown through the air (2)the events that happen during a period of time, which often lead to a particular aim or result” とあり、orbit は “to travel in a curved path around a much larger object such as the Earth, The sun etc” とありました。ここから判断すると、orbit の方が天文学的なイメージが強いと言えそうです。(OkaUchi)

[http://d.hatena.ne.jp/A30/20141112/1415786776:title]