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- directory 170
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- hop 289
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- requital 10
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- kilobit 13
- wince 104
- anesthetist 94
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- Resignation 26
- boulevard 114
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- catchword 63
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- picturesque 77
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- vanguard 53
- puzzle 467
- inbreeding 18
- missile 492
- Campaign 701
- digestible 46
- Problem 562
- Hand 1509
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- liability 191
- jagged 203
- relatability 50
- Button 243
- giraffe 66
- concept 1024
- Usage 141
- unfortunate 582
- pail 562
- Supervise 77
- knock 496
- spoiler 8
- test 1723
- fame 530
- chestnut 53
- overturn 280
- Get 275
- parasite 174
- captivity 132
- probation 198
- flashgun 57
- Tier 112
- menu 125
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- persistent 225
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- rash 236
- death 808
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- independent 483
- seek 494
- ranger 5
- attribute 717
- segue 9
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- igbo 7
- domiciliary 86
- instance 503
- chocolate 400
- tension 565
- unknown 417
- Content 203
- call-up 243
- Fillet 99
- amid 410
- inequality 163
- sob 472
- syndicate 155
- molecule 376
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- bicentenary 57
- branded 99
- cure-all 444
- system 1131
- Masculine 87
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- accent 796
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- balance 1806
- exonerate 83
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- earthling 55
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- ok 1036
- Before 153
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- cement 682
- artichoke 76
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- Gamble 63
- protection 481
- done 319
- Elk 47
- Fume 21
- truncheon 5
- endoscopy 61
- Walk 183
- RSVP 162
- past 1912
- fightback 59
- finding 459
- sneeze 224
- look through 141
- front man 118
- Scare 133
- sportsman 390
- stump 176
- Tie 722
- Frequent 315
- Explanation 321
- Flavour 534
- exclamation 93
- kindness 2939
- slack 397
- poutine 12
- committed 176
- tagine 7
- unethical 31
- Honest 427
- unmistakable 110
- Reference 155
- single out 45
- unspoiled 168
- extremist 155
- Sensitive 1668
- lead 1802
- thick 394
- nonlinear 11
- Continuing without stopping 39
- word 3191
- implementation 178
- habit 1415
- impeachment 124
- exorcise 130
- aerie 62
- solid 827
- calibrated 65
- observation 469
- capricorn 69
- rest 1419
- jump-start 72
- Stigma 353
- inspection 703
- bannock 47
- mostly 421
- expenditure 731
- Intramural 23
- Nuisance 207
- Life 1708
efficacy
noun [U] formal 
/ˈefɪkəsi/
/ˈefɪkəsi/ - effectiveness in producing the result that you intended 功效；效能
The efficacy of the medical procedure has not been proven.
Synonyms and related wordsUsefulness and efficiency: usefulness, efficiency, effectiveness...
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