- ill-defined disease
- 不明确: indeterminacy; indeterminate ...
- 的: 4次方是 The fourth power of 2 i ...
- 疾病: disease; illness; sickness; ...
- 不明确的传染性疾病: ill-defined infectious disease
- 不明确的: ambiguous; equivocal; ill defined; indecisive; indefinite; indeterminate; nubilous; shy; uncertain; unclear; undefined; vague
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