YOU SAID:

The blue yarn needs to twine with the yellow yarn

INTO JAPANESE

青い糸は黄色い糸と絡ませる必要があります

BACK INTO ENGLISH

The blue thread needs to be intertwined with the yellow thread.

INTO JAPANESE

青い糸を黄色い糸と絡ませる必要があります。

BACK INTO ENGLISH

The blue thread needs to be intertwined with the yellow thread.