【コラム】楽天は｢英語公用語化｣でどう変わったのか

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>>306
Since I was sent to the company's overseas branch for work and got married with a local lady here, I sort of in a 24 hours whole day, have no opportunities to communicate in Japanese language but English during daytime for work as well my my private time after work.
After years of this kind of life, I realised my Japanese language skill has significantly deteriorated especially for speaking and I do feel damn. But I guess an ordinary person like me shall not overestimate myself as I would be capable enough to simultaneously master several language with high proficiency, right?