1、ambitious

有雄心的；有抱負(fù)的；有野心的

Chris is so ambitious, so determined to do it all.

克里斯躊躇滿(mǎn)志，決心要將它都做完。

He's a very ambitious lad and he wants to play at the highest level.

他是個(gè)很有抱負(fù)的小伙子，想?yún)⒓幼罡咚降谋荣悺?/p>

規(guī)模宏大的；艱巨的

The ambitious project was completed in only nine months.

這個(gè)規(guī)模宏大的項(xiàng)目只用了9個(gè)月就完成了。

Their goal was extraordinarily ambitious.

他們的目標(biāo)極其宏偉。

2、hold back

（使）猶豫;（使）退縮

The administration had several reasons for holding back.

政府因?yàn)閹讉€(gè)原因而猶豫不決。

Melancholy and mistrust of men hold her back.

憂(yōu)郁的性格和對(duì)男人的不信任使她裹足不前。

阻擋;阻止

Stagnation in home sales is holding back economic recovery.

國(guó)內(nèi)銷(xiāo)售的停滯不前正阻礙著經(jīng)濟(jì)復(fù)蘇。

Jake wanted to wake up, but sleep held him back.

杰克想要醒來(lái)，但睡意使他又沉入夢(mèng)鄉(xiāng)。

抑制住,忍住(眼淚、笑聲等)

She kept trying to hold back her tears.

她一直在試圖抑制住眼淚。

He could no longer hold back convulsive laughter.

他再也忍不住，前俯后仰地大笑起來(lái)。