In plain words
Dwelling on sense objects gives rise to attachment; from attachment comes desire, and from desire comes anger.
Word for word
For a person dwelling on objects, attachment to them arises; from attachment desire is born; from desire anger arises.
ध्यायतो विषयान् पुंसः सङ्गस्तेषूपजायतेसङ्गात् सञ्जायते कामः कामात् क्रोधोऽभिजायते
Other commentaries
The commentators
▸Bhagavadgītābhāṣyam
अथेदानीं पराभविष्यतः सर्वानर्थमूलमिदमुच्यते —
ध्यायतः चिन्तयतः विषयान् शब्दादीन् विषयविशेषान् आलोचयतः पुंसः पुरुषस्य सङ्गः आसक्तिः प्रीतिः तेषु विषयेषु उपजायते उत्पद्यते । सङ्गात् प्रीतेः सञ्जायते समुत्पद्यते कामः तृष्णा । कामात् कुतश्चित् प्रतिहतात् क्रोधः अभिजायते ॥ ६२ ॥
In plain words
And now this is stated: the root of every disaster that overtakes a man on his way to ruin —
Dwelling on objects — that is, thinking about them, keeping the particular ones in view, sound and the rest, going over them again and again: in the man who does this, in the person, attachment is born toward those objects — clinging, fondness. It springs up in him. Out of that attachment, out of that fondness, desire is fully born — thirst. It fully arises. And out of desire, blocked by something or other, anger comes.
Close to the Sanskrit
Now, at this point, this — the root of all misfortune of one who is about to come to ruin — is stated:
Of one dwelling on — that is, of one thinking about — objects, namely sounds and the rest, the particular sense-objects, of one who keeps considering them, of a man, that is, of a person, attachment — clinging, fondness — toward those objects is born, that is, springs up. From attachment, from fondness, is fully born, that is, fully arises, desire, that is, thirst. From desire, thwarted by something, anger comes into being.