Without further information, I can't answer this question accurately. Without seeing the kanji of the specific word you're looking for, I can only guess; 'sai' has multiple potential meanings. Among them are: debt, circumstances, gap, and rhinoceros.
'Desu' is what is called, in grammar, a "copula." That is, it links a subject and predicate together, but is frequently translated as a verb of existence: 'to be.'
juukyuu sai desu
watashi WA ju san sai desu.
It's a small dick.
In Japanese this would be 'watashi wa juu ni sai desu.' (私は12歳です)
Desu or Des is the Japanese verb 'to be'
ï¼’ï¼‘æ‰ (nijuuissai) means '21 years old' in Japanese. 二åä¸€æ‰ may also be used.'I am 21 years old' is simply21æ‰ã§ã™ (nijuuissai desu).
"Yon Jyuu roku sai desu" translates to "I am 46 years old" in English. In this phrase, "yon" means four, "jyuu" means ten, and "roku" means six, collectively indicating the age of 46. The term "sai" refers to years of age, and "desu" is a polite ending particle.
this makes no sense
If you mean DESU , it means the verb "to be" in japonese ~
I am pretty. atashi - I wa...desu - am kirei - pretty
it means is/are it is a conjugate for des or desu.
That was very skillful!