“适应新环境”常见的英文表达有：
adapt to the new environment
“adapt”有“适应；使适应”的意思，“adapt to”是固定短语，表示“适应……”，“the new environment”即“新环境”。
例句：It takes some time to adapt to the new environment after moving to a new city.（搬到新城市后，需要一些时间来适应新环境。）
adjust to the new environment
“adjust”也有“调整；适应”的含义，“adjust to”同样表示“适应……”。
例句：Students often find it difficult to adjust to the new environment at the beginning of the school year.（在学年伊始，学生们常常发现很难适应新环境。）
get used to the new environment
“get used to”意思是“习惯于；适应”，强调逐渐习惯的过程。
例句：With the help of teachers and classmates, he gradually got used to the new environment.（在老师和同学的帮助下，他逐渐适应了新环境。）