Knife-edge
n. 刀口, 銳利物, 刃狀物
?? 牛津釋義
knife-edge
n (usu sing 通常作單數(shù))
1 cutting edge of the blade of a knife 刀刃.
2 (idm 習語) on a knife-edge
(a) (of a person) nervous (about the outcome of sth) （指人）（對某事物的結(jié)果）十分焦慮
He's on a knife-edge about his exam results. 他對考試成績十分擔心.
(b) (of a situation, etc) at a critical point （指情況等）處於緊要關頭
The success of the project is still very much on a knife-edge. 這一項目的成敗目前仍處於關鍵時刻.
?? 詞語組成解析
knife
[na?f]
n. 刀;匕首;刃部;手術(shù)刀;
vt. 切割，刺;傷害;
vi. 劈開;劃過;
edge
[?d?]
n. 邊;優(yōu)勢;（懸崖、峭壁的）邊緣，端;鋒利，尖銳;
vt. 在…上加邊界;使?jié)u進;給（刀刃）磨邊，使鋒利;修整;
vi. 慢慢向前移動，側(cè)身移動;
??? 情景例句
I certainly am. May I help you?
我是，我能幫您什么忙嗎？
A poor man who takes a rich wife has a ruler, not a wife.
窮漢娶富妻，必受老婆欺。
My name is Han Meimei. What's your name?
我叫韓梅梅，您呢？