For Japan the news was the piece of a jigsaw that went towards solving the puzzle of numerous unexplained disappearances.(對于日本而言，這個消息就如同拼圖上的關鍵一角，為解決多起原因不明的失蹤案件提供了線索。)

One of the country's grand old gunmen dies in an unexplained fire.(一名偉大的軍人死于一場無法解釋的火災。)

The analysis found a significant association between sudden unexplained death and the use of a stimulant at the time of death.(研究分析發現死時在原因不明的猝死和興奮劑的使用上存在顯著相關。)

Truthfully, there have been some unexplained occurrences around the house.(老實說，這房子的周圍有一些無法解釋的現象發生。)

The city's water supply has been cut for unexplained reasons.(城市的供水被莫名其妙地切斷了。)

Too many mysteries of the deep remain unexplained and, anyway, no country turns down a chance to enlarge its sovereignty.(太多深海的秘密依然未被揭示，而且，不管怎樣，沒有一個國家會放棄擴張主權的機會。)

With unexplained hair loss, there’s not one trigger for every person and there’s not one treatment for every person.(對于無法解釋的頭發缺失，沒有一種起因可以歸因于每個人，也沒有那么一種治療方法適合每個人。)

Fans have lived through dozens of complicated plot twists, many of them mysterious and unexplained.(劇迷們已經經歷了數十個復雜的敘事轉折點，多數都神秘莫測、未予解釋。)

In fact, they almost always invoke a skyhook, some unexplained result without which the entire structure collapses.(事實上，他們幾乎總是產生出一個天鉤，那是某種無法解釋的結果，沒有它整體就要坍塌。)

If you have persistent, unexplained fatigue, ask your doctor about being tested for diabetes.(如果你感到莫名的疲勞，而且持續時間較長，問問醫生是否需要檢查血糖。)