YOU SAID:

The first time you have a problem is if

INTO JAPANESE

初めて問題が発生するのは、

BACK INTO ENGLISH

The first time the problem arises:

INTO JAPANESE

初めて問題が発生したとき:

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The first time you encounter a problem:

INTO JAPANESE

初めて問題が発生した場合:

BACK INTO ENGLISH

If you encounter problems the first time:

INTO JAPANESE

初めて問題が発生した場合:

BACK INTO ENGLISH

If you encounter problems the first time: