to  be  instrumental in   something
be
bi
bi
instrumental
ɪnstrəmɛntl
instrēmentl
in
ɪn
in
something
sʌmθɪng
samthing

英語での「 be instrumental in something 」の定義と意味

to be instrumental in something
01

to be an important factor or contributor to a specific result 

Her guidance was instrumental in the project's success. 
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