/'tenəbl; `tɛnəbl/
adj
1 that can be defended successfully against opposition or attack 可防守的; 守得住的; 可维护或防护的
*a tenable position 可防守的位置
* The view that the earth is flat is no longer tenable. 认为地球是平的这一观点站不住脚了.
2 [pred 作表语] ~ (for...) (of an office or postion) that can be held (for a certain time) （指职务或职位）可保有, 可维持（一定时间）
*The lectureship is tenable for a period of three years. 讲师这一职位任期三年.

adj
[Date: 1500-1600; Language: French;Origin: tenir; TENANT]
a belief, argument etc that is tenable is reasonable and can be defended successfully
　an idea which is no longer tenable