'It is the second door on the left.'
'The second number is 9.'
"Hidari" is a Japanese word and in English it means "Left"
'(This/That/She) is my younger sister.'
'(These/Those/They) are our parents.'
Where's the bathroom.
'It is the first door on the right.'
"Shita" is a Japanese word and in English it means "Down"
I think you mean "genki desu ka". The correct way of spelling it in English would be "ogenki desu ka". It is Japanese for "How are you?" One would usually answer by saying "Genki desu. Anata wa?' which means "I'm fine, and you?"
"O-ai dekite ureshii desu" is a Japanese phrase and in English it means "Nice to meet you"
'The third number is 7.'
"Garufurendo shinai desu" (ガルフレンドしないです) translates to "I don't have a girlfriend" in English. The term "garufurendo" is a loanword derived from "girlfriend," and "shinai" means "not do" or "do not." The addition of "desu" adds a level of politeness to the statement.
"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.