अन्वयः

भूः land, शिलोच्चयैः with tall mountains, उपलैः with pebbles, सञ्छन्ना इव as though it is covered, दृश्यते looked, आपगाभिः by rivers, वसुन्धरा land, सूत्रैः with threads, संवीता इव as if entwined.

M N Dutt

We saw the earth covered with crags and masses of rocks, and intersected by streams resembling threads.

Summary

'The earth filled with lofty mountains appeared as if it is covered with pebbles. Surrounded by rivers meandering, it looked as though it was entwined with threads.

पदच्छेदः

उपलैर्	उपल (३.३)
इव	इव (अव्ययः)
संछन्ना	संछन्न (√सम्-छद् + क्त, १.१)
दृश्यते	दृश्यते (√दृश् प्र.पु. एक.)
भूः	भूः (√भू म.पु. )
शिलोच्चयैः	शिला–उच्चय (३.३)
आपगाभिश्च	आपगा (३.३)–च (अव्ययः)
संवीता	संवीत (√सम्-व्ये + क्त, १.१)
सूत्रैर्	सूत्र (३.३)
इव	इव (अव्ययः)
वसुंधरा	वसुंधरा (१.१)

छन्दः

अनुष्टुप् [८]

छन्दोविश्लेषणम्

१	२	३	४	५	६	७	८
उ	प	लै	रि	व	सं	छ	न्ना
दृ	श्य	ते	भूः	शि	लो	च्च	यैः
आ	प	गा	भि	श्च	सं	वी	ता
सू	त्रै	रि	व	व	सुं	ध	रा