難しいですねぇ・・・。
細かい説明になりますが、簡単な単語を使ってなるべく簡単に説明してみました。
It is the specific year when the stars aren't in person's favor, and he has to be careful of whatever he does.
For male it comes on the year of his 25th, 42nd, and 60th, and for female, on her 19th and 33rd.
It's from Chinese fortune telling.
とかでどうでしょう。このくらいしか知らないので・・・。
何かもっと付けたせそうですね。
厄年は、"critical time of life"とありました。
Yaku year is critical time of life for specified person. Yaku is thought of as take a terrible toll on one's physical and emotional health and bereave of person.
難しくて、解りません。