今天是我第一天上班，我的口语不太熟练，请多包涵．怎么翻译？

如果是自己用,又是欧美企业,建议不要上来就说"包涵"之类的表态,代之为 My oral English is not good enough yet, but I'm doing my best to improve it! 其实这已经没啥必要了,说点正面的客套话吧

its my first day to come for work. My Speaking－English is not very fluent, sorry about that.