1.promotion
n. 晋升；提升；促销；促进
单词形态：
复数：promotions
examples:
1) After serveral years of work, he got a promotion!
2. flock
n. （鸟或羊的）群；一群人；（对牧师而言的）教徒
vi. 聚集，成群而立
单词形态：
复数：flocks
第三人称单数：flocks
现在分词：flocking
过去式：flocked
过去分词：flocked
examples:
1) After autumn, flacks of geese flew south to avoid cold weather.
3. volunteer
n. 志愿者；志愿兵
v. 自愿做；自愿加入；主动提供（信息）；自愿做，义务做
单词形态：
复数：volunteers
第三人称单数：volunteers
现在分词：volunteering
过去式：volunteered
过去分词：volunteered
examples:
1) Many volunteers donate their blood to the hospital every year.
4. slavery
n. 奴隶身份；奴隶制
examples:
1) Lincoln got many black's support after the slavery abolished.
5. lock
n. 锁
v. 锁上
单词形态：
复数：locks
第三人称单数：locks
现在分词：locking
过去式：locked
过去分词：locked
形容词：lockable
短语：
lock out
停工；在劳工纠纷期间不让（雇佣工人）工作
have a lock on
（北美，非正式）牢牢掌握
under lock and key
妥善锁藏着
lock on to
（用Gps等手段）定位跟踪
lock someone out
给...吃闭门羹，闭门不让进
examples:
1) It was very embarrassing when we locked the door and forgot the key in house.
6. treasury
n. 国库，金库；财政部；宝库
单词形态：
复数：treasuries
examples:
1) The treasury announced the annual budget, the more will used for building public things.
7. flower
v. 开花；用花装饰；成熟
n. 花；精华；盛年；精英
单词形态：
复数：flowers
第三人称单数：flowers
现在分词：flowering
过去式：flowered
过去分词：flowered
examples:
1) The flowers was decorated in the living room.
2) There are many flowers in the company whose can solve all kinds of difficute problems.
8. deadly
adj. 致命的；完全的
adv. 死一般的；非常
examples:
1) His resignation was due to the deadly mistake.
9. undermine
vt. 暗中破坏；逐渐削弱；侵蚀...的基础；挖...的墙角；动摇（地位/权威）
单词形态：
第三人称单数：undermines
现在分词：undermining
过去式：undermined
过去分词：undermined
examples:
1) Under the ants undermined, the dam was collapsed.
10. capability
n. （实际）能力，性能
单词形态：
复数：capabilities
examples:
1) Russia's military capability is very strong that it can defeat Ukraine.
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