on the edge of one's seat

(informal)very excited and giving one's full attention to something

(非正式)十分興奮的，興奮得坐不住的；全神貫注的

set someone's teeth on edge

(especially of an unpleasantly harsh sound) cause someone to feel intense discomfort or irritation

（尤指刺耳聲音）使人覺得牙根發(fā)癢，使人覺得十分刺耳

a grating that set her teeth on edge.

讓她覺得牙根發(fā)癢的刺耳磨擦聲。

take the edge off

reduce the intensity or effect of (something unpleasant or severe)

使鈍；削弱；挫…的銳氣

the tablets will take the edge off the pain.

這些藥片可以減輕疼痛。

edge out

To surpass or beat by a small margin

排擠掉：以微弱優(yōu)勢超過或勝過

The downhill racer edged her opponent out on the middle stretch.

下坡滑雪賽的選手將她的對手慢慢擠出中央跑道

on edge

Highly tense or nervous; irritable.

緊張的：高度緊張或不安的；易怒的

on the edge

In a precarious position.

邊界狀態(tài)：處于不穩(wěn)定的狀態(tài)

In a state of keen excitement, as from danger or risk

激動，興奮：處于高度興奮狀態(tài)，如由危險或冒險引起的

“the excitement of combat, of living on the edge”(&b{Nelson DeMille})

“由一觸即發(fā)的戰(zhàn)斗引起的激動”(&b{納爾遜·德米耶})