名詞 muster:

1. a gathering of military personnel for duty
2. compulsory military service
   同義詞：conscription, draft, selective service

動詞 muster:

1. gather or bring together
   同義詞：rally, summon, come up, muster up
2. call to duty, military service, jury duty, etc.

形容詞 must:

1. highly recommended
   同義詞：must

1. He mustered all his courage to take part in the game.
   他鼓起全部的勇氣參加比賽。
2. The troops mustered on the hill.
   部隊在小山上集合。

mus.ter

v.（動詞）
mus.tered,mus.ter.ing,mus.ters
v.tr.（及物動詞）
To call (troops) together, as for inspection.
集合：為檢閱召集（軍隊）
To cause to come together; gather:
聚集；收集：
例句：
Bring all the volunteers you can muster.
把你能夠召集的所有志愿者都帶來

To call forth; summon up:
鼓起（勇氣）；集攏：
例句：
mustering up her strength for the ordeal.See Synonyms at call
她攢足力量迎接考驗參見 call

v.intr.（不及物動詞）
To assemble or gather:
聚集或集合：
例句：
mustering for inspection.
集合起來進行檢閱

n.（名詞）

A gathering, especially of troops, for service, inspection, review, or roll call.
為儀式、檢閱或者點名而集合，特別指部隊
The persons assembled for such a gathering.
集合的人員
A muster roll.
花名冊
A gathering or collection:
集會：
例句：
a muster of business leaders at a luncheon.
商業(yè)領頭人們的一次午餐聚會

A flock of peacocks.See Synonyms at flock
孔雀群參見 flock

<常用詞組>muster in
To enlist in military service:
應征入伍：
例句：
She mustered in at the age of 8.
她8歲時入伍

muster out
To leave or be discharged from military service:
離開軍隊：
例句：
He mustered out when the war ended.
戰(zhàn)爭結束時他退伍了

來源：
Middle English mustren
中古英語 mustren
from Old French moustrer
源自 古法語 moustrer
from Latin mônstr3re [to show]
源自 拉丁語 mônstr3re [顯示]
from mônstrum [sign, portent]
源自 mônstrum [信號，預兆]
from monôre [to warn] * see men-
源自 monôre [預告] *參見 men-