adj.(人们出于某种特殊目的)成群的,聚集的,联合的;
例句:
Troops are massing ( are being massed ) on the frontier.
部队正在边境集结.
The soldiers, massed along the river bank, were ready for the invasion.
士兵集结在河岸, 准备入侵.
He could not escape the massed ranks of newsmen.
他没法躲开成群的记者。