This means one bridge in less than 30 km across the nearly 3,000-km-long trunk of the river by that time.

This means one bridge in less than 30 km across the nearly 3, 000-km-long trunk of the river by that time.

This means one bridge in less than 30 kilometers (19 miles) across the nearly 3,000-kilometer-long trunk of the river.

The construction of too many bridges may prevent large oceangoing ships from sailing directly to inland cities along the river.

We ate away, reminiscing about our victories over the enemies from different streets and villages and competing with each other in casting curses. A few golden butterflies and dragonflies were fluttering around us. The afternoon air was warm and clean, and the town below us seemed like a green harbor full of white sails.

I work hard, I work very hard. All the books at least 30 revisions.