tested repeatedly with no error; proven reliable
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesidiom
to be proven reliable every time; to never fail after repeated trials
formal强调经过多次检验都非常准确、有效。爽：差错，失误。
Zhè这
ge个
fāng方
fǎ法
tā他
yòng用
le了
hěn很
duō多
nián年
，
lǚ屡
shì试
bù不
shuǎng爽
。
He has used this method for many years, and it has never failed him.
Zhè这
ge个
shì市
chǎng场
yù预
cè测
mó模
xíng型
zhǔn准
què确
lǜ率
jí极
gāo高
，
lǚ屡
shì试
bù不
shuǎng爽
。
This market prediction model has an extremely high accuracy rate; it's proven reliable every time.
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Yòng用
zhè这
ge个
jì技
qiǎo巧
shuō说
fú服
tā他
，
wǒ我
lǚ屡
shì试
bù不
shuǎng爽
。
Using this trick to persuade him has never failed me.