1)These fleets were a sight to behold and were in a league of their own at that time.
2)In terms of economic power, military might and global influence, two countries -- China and the US clearly stand in a league of their own.
1)African royal families sent gifts such as giraffes as gestures of friendship in return for gold, silk, and spices.
2)They also carried and traded other things like spices, cloth, jewels and gold.
童话/寓言/爱情故事
1)Marco Polo’s tales inspired European explorers to search for sea routes from west to east.
2)I’m reading a book about folk tales and ancient legends.
2)The merchant wants to expand his business.
3)They have sent their troops to protect the merchant ships.
set sail
3. set sail: 起航; 开航 set sail for...: 起航去某地 set sail from...to...: 从某地起航去某地