Google Translate does provide some pronunciation guidance for ’tsuyoku naritai’, but it is not always correct. To be certain, it is best to consult a qualified Japanese language instructor.
'tsuyoku naritai' is a Japanese phrase meaning 'I want to become strong'. The correct pronunciation of this phrase is "tsu-yo-ku na-ri-tai", with the stress on the second syllable of each word.
When speaking the phrase, keep in mind that a characteristic of Japanese pronunciation is to reduce the 'u' sound and to elongate the vowels, so 'tsuo-kyo na-ri-tai' is a possible variation.
It is also important to remember that there is a difference between the way that a phrase is written and the way it is pronounced. This is why it is essential to consult a qualified Japanese language instructor to ensure that your pronunciation is correct.
While Google Translate can be a useful tool for learning basic Japanese phrases, it is not the best for practicing pronunciation of those phrases. Many other language learning tools such as JapanesePod101 and LingQ offer more comprehensive Japanese language instruction that can help you learn correct pronunciation.