a. 疲惫不堪的, 操劳过度的

[ adj ]
lacking strength or vigor
<adj.all>

Debilitate \De*bil"i*tate\, v. t. [imp. & p. p. {Debilitated};
p. pr. & vb. n. {Debilitating}.] [L. debilitatus, p. p. of
debilitare to debilitate, fr. debilis. See {Debility}.]
To impair the strength of; to weaken; to enfeeble; as, to
debilitate the body by intemperance.

Various ails debilitate the mind. --Jenyns.

The debilitated frame of Mr. Bertram was exhausted by
this last effort. --Sir W.
Scott.

debilitated \debilitated\ adj.
1. lacking strength or vigor; weakened.

Syn: adynamic, asthenic, enervated.
[WordNet 1.5]

2. weakened due to illness.

Syn: enfeebled, infirm, seedy.
[WordNet 1.5]