at root

basically; fundamentally

實際上，根本上，本質(zhì)上

it is a moral question at root.

這實質(zhì)上是個道德問題。

put down roots

(of a plant) begin to draw nourishment from the soil through its roots

（植物）扎根

strike at the root (或 roots) of

affect in a vital area with potentially destructive results

摧毀…的基礎(chǔ)，根絕

the proposals struck at the roots of community life.

這些建議根絕了社區(qū)生活。

take root

(of a plant) begin to grow and draw nourishment from the soil through its roots

（植物）生根，開始生長

root something out

(亦作 root something up)dig or pull up a plant by the roots

連根挖，連根拔

root for

(informal)support or hope for the success of (a person or group entering a contest or undertaking a challenge)

(非正式)支持，贊助，聲援（個人或團(tuán)體參加比賽或接受挑戰(zhàn)）

the whole of this club is rooting for him.

這個俱樂部里大家都在支持他。

root someone on

(N. Amer. informal)cheer or spur someone on

(北美，非正式)為…歡呼，喝彩；為…鼓氣

his mother rooted him on enthusiastically from ringside.

他的母親從臺邊區(qū)拼命為他加油。

root and branch

Utterly; completely

完全地；徹底地

The organization has been transformed root and branch by its new leaders.

這個組織已被它的新領(lǐng)導(dǎo)人徹底改變了性質(zhì)