莽莽的英文：
luxuriant; rank; vast
It arched coldly and remotely from the jungle beneath it
它冷漠而孤高的身影挣出了莽莽的丛林。
adj. 繁茂的，肥沃的；华丽的
The quota on luxury item have is revoke.
奢侈品限额已被撤消。
Few could afford the luxury.
很少有人买得起这种奢侈品。
He was reared in the lap of luxury.
他在奢侈的环境中长大。
n. 排；等级；军衔；队列；行列
v. 排列；把…分等；列为；列队
adj. 讨厌的；恶臭的；繁茂的
formation; rank
队形
He rose from the rank of captain to the rank of general.
他从上尉升到将军。
Your rank is next to mine.
你的排名居于我之后。
adj. 广阔的；巨大的；大量的
A vast crowd impacted the square.
广场上挤集了一大群人。
That that vast barren area is inhabited.
那片广阔的荒芜地区有一些人类在居住。
Vast distances boggle the mind.
距离之大，不可思议。