sentence: When employees face any problems or difficulties at work , they must refer to the theory that explains this phenomenon . Without knowing this theory , employees ca n't overcome these difficulties . For instance , engineering science seems practical , but each part of engineering science is based on theories .
modified: When employees face any problems or difficulties in work , it must be referred to the theory that explain this phenomenon , without knowing this theory employees ca n't overcome these difficulties , for instance , engineering science seems practical , but each part of engineering science is based on theories .
transformation: PREP, OTHER, VERB:SVA, PUNCT, PUNCT, PUNCT