whereby
adverb /weəˈbaɪ/
/werˈbaɪ/
(formal)- by which; because of which
凭此；借以；由于 - They have introduced a new system whereby all employees must undergo regular training.
他们采用了新的制度，所有的雇员都必须定期培训。
- They have introduced a new system whereby all employees must undergo regular training.