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He is indiscriminate in making friends.
Uncritical：不加以批评的，随意的 [critical :批评的，批判的]
She is uncritical while going shopping.(不分好坏的)
Unselective：不加以选择的 = uncritical
Haphazard: 任意/无计划的 [‘hæp’hæzəd]
make haphazard remarks(妄作评论，随口乱说)
Random adj./n. 任意胡说的 at random
Casual：随便的（漫不经心的）
Desultory: 随意的（无条理）
The careful study of a few books is better than the desultory
reading of many.
Certify: 证明，保证
Confirm: 证实
My boss can confirm that I was here at that time.
Document: n. 文件 v.用文件证明
Please document what you said just now. (v)
Substantiate:证明（某事有根据）
Validate: 使生效的, 确认证实
Prove:证明证实是否怎样
Check:查对
please check/verify the figures / statistics.
Ascertain: 查明
