He never criticized his boss because he was afraid of loosing his job.是什么意思？

He never criticized his boss because he was afraid of loosing his job.

他从不批评他的老板,因为他怕丢掉工作.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

never

adv. 从不，从来没有，一点也不，决不，<口>不会…吧，没有，不曾；

例句
The public never had faith in his ability to handle the job...
公众从来不相信他有能力胜任这一职位。

criticized

vt. 批评(criticize的过去式)；v. 评论，批评( criticize的过去式和过去分词 )；

例句
The health service has been criticized for being too impersonal.
公共医疗卫生服务一向被指责缺乏人情味。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

boss

n. 老板，上司，领袖，首领，[机]轴套，套筒；vt. 当…的首领，管理，指挥；vi. 当首领，发号施令；adj. <俚>很好的，一流的；

例句
That is a fair approximation of the way in which the next boss is being chosen.
那和下一任老板的选任方式相当类似。

because

conj. 因为；

例句
5,000 people die every year because of accidents in the home...
每年有5,000人死于家中的意外事故。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

afraid

adj. 害怕的，担心的，恐怕，畏惧，害怕；

例句
I am afraid the court may not adjourn until three or even later.
我担心法庭要到3点或更晚时才会休庭。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

loosing

adj. 不稳定的；v. 松弛，释放( loose的现在分词 )，不受约束地表达，松开，射出（子弹、箭等）；

例句
He never criticized his boss because he was afraid of loosing his job.
他从不批评他的老板,因为他怕丢掉工作.

job

n. （一件）工作，职责，职业，（作为一个单元处理的）作业；vt. 承包，代客买卖；vi. 做零工，作包工，打杂；

例句
...the sharp acceleration in job losses.
失业的急速增加