unaided
英 [ʌn'eɪdɪd]
美[ʌn'edɪd]
	    - adj. 未受协助的;无助的
 
英英释意
- 1. being without physical aid;
 - "he could not rise unaided from a sitting position"
 
- 2. (of the eye or ear e.g.) without the aid of an optical or acoustical device or instrument;
 - "visible to the naked eye"
 - "clearly audible to the unaided ear"