?转变为

转变为 ? transformed into ..

?转化为

... trailing 尾随;落后 transformed into 转化为 trapped 被困 ...

?被转化成

老师帮我解决了这个难题 ? Teacher help me to solve this puzzle 被转化成 ? transformed into a 他进行了彻底的调查，难怪他对此事了解很多 ? He carried out a thorough investigation, no wonder he know about this a lot...

?转换为

... keep good mood ? 保持好心情 transformed into ? 转换为 be surrounded area ? 被包围的区域 ...