顽强的英文：
tenacious
hard to defeat

参考例句：

His dogged determination helped him to win the race.
他顽强的决心使他赢得比赛。

Edward came in like a country wind, obstreperously healthy, jovial, large and rather bald
爱德华象一阵乡野的风刮了进来，带着顽强的健康，快活，奔放和相当的直率。

Often very annoying weeds, goldenrods crowd out less hardy plants and act as hosts to many insect pests.
黄菊花通常令人生厌，它挤走不那么顽强的植物，并找来很多害虫。

stout resistance
顽强的抵抗。

Stubbornly persevering;tenacious.
顽强的;固执的

A tenacious revolutionary spirit
顽强的革命精神

The enemy resisted stoutly.
敌人顽强地抵抗。

The tenacious work of the whole Party and the people of all ethnic groups around the country.
全党和全国各族人民的顽强奋斗。

The defenders put up a stubborn resistance.
防守将士进行了顽强的抵抗。

He resumed his dogged effort
他继续他顽强的努力。

tenacious是什么意思：
adj. 顽强的，坚持不懈的；持久的；固执的；紧握的

He is tenacious of his opinions.
他固执己见。

I Have a tenacious memory.
我有着超乎常人的记忆力。

To be obstinately repetitious,insistent,or tenacious.
坚持不变倔强地重复、坚持或固执

hard是什么意思：
adj. 硬的，坚固的；困难的；有力的；冷酷无情的
adv. 努力地；困难地；严重地，猛烈地

It is hard to conclude.
这很难断定。

It is blowing hard.
风刮得很大。

It was sleeting hard.
雨雪霏霏。

defeat是什么意思：
v. 击败；使困惑；使失败，阻挠，挫败
n. 失败；击败，战胜

Victory of defeat
不成功,便失败

Their defeat was not inevitable.
他们被击败是不是不可避免的。

sting of defeat
失败的痛苦