play an important role

基本解釋

However, today a president could play an important role in restoring stability to monetary policy and the value of the dollar.
不過(guò)，今天一位總統(tǒng)能夠在重塑貨幣政策和美元價(jià)值的穩(wěn)定方面扮演一個(gè)重要的角色。
Tiny releases of glutamate play an important role in the body, but any excess can be dangerous - especially to the brain and nervous system.
微量的谷氨酸釋放在身體扮演一個(gè)重要角色，但是任何一點(diǎn)過(guò)量都是危險(xiǎn)的，特別是對(duì)腦子和神經(jīng)系統(tǒng)。
But while we may not recall our nocturnal visions, scientists increasingly believe our dreams play an important role in memory and learning.
但是盡管我們回想不起夜間夢(mèng)景，科學(xué)家日益相信我們的夢(mèng)對(duì)我們的記憶和學(xué)習(xí)起到重要作用。

Sharks play an important role in the food chain.
Mechanisms like habituation, classical conditioning and operant conditioning are real; they can be scientifically studied; and they play an important role in the lives of animals and probably an important role in human lives as well.
諸如習(xí)慣化，經(jīng)典條件作用，操作性條件作用之類(lèi)的機(jī)制,都是真實(shí)存在的;,這些機(jī)制都能得到科學(xué)的研究;,它們?cè)趧?dòng)物的生活里起到了重要的作用,或許在我們?nèi)祟?lèi)的生活中,也同樣起到了重要的作用。
耶魯公開(kāi)課 - 心理學(xué)導(dǎo)論課程節(jié)選
I think that America has an important role to play to have the standards increased.
我覺(jué)得美國(guó)在提高標(biāo)準(zhǔn)方面扮演著重要的角色。
愛(ài)護(hù)小朋友 - SpeakingMax英語(yǔ)口語(yǔ)達(dá)人

Protected areas play an important role in conserving the biodiversity and thus sustaining rural livelihoods.
UNESCO: NATURAL SCIENCES