Up to one's ears 深深卷入 ; 深陷于 ; 埋首于 ; 专心于
be up to one'S ears 非常忙碌 ; 十分繁忙 ; 分身不暇 ; 很忙
up to one's ears be 热中
up to one's ears in 深陷于
flush up to one's ears 面红过耳 ; 脸红耳赤
to prick up one's ears 侧耳倾听
·2,447,543篇论文数据，部分数据来源于NoteExpress
high on , wild about
But remember that "be up one's ears also means to be deeply involved".
但是要记得，这个词组还表示“完全卷入某事”。
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