cleft单词什么意思_cleft单词解释 cleft的反义词cleft的例句

名词裂缝; 裂口; cleave的过去式和过去分词; 进退维谷

动词劈开，剁开，割开( cleave的过去式和过去分词 )

1. 裂口：内切酶的活性位点位于一个开放的裂口(cleft)中,它可结合在纤维素链的任何部位并切断纤维素链. 外切酶的活性位点位于一个长环状通道中,它只能从纤维素链的非还原性末端切下纤维二糖. (2)纤维素结合结构域:CBD在纤维素酶中位于肽链的氨基端或羧基端,

1. (石头或地面的)罅隙，裂隙，裂口
A cleft in a rock or in the ground is a narrow opening in it.

e.g. ...a narrow cleft in the rocks too small for humans to enter.
岩石之间人无法通过的一条窄缝

2. (下巴上的)凹口
A cleft in someone's chin is a line down the middle of it.

3. (下巴)有凹口的
If someone has a cleft chin, they have a cleft in their chin.

4. 左右为难的；进退维谷的
If you say that a person or organization is in a cleft stick, you mean that they are in a difficult situation which will bring them problems and harm whatever they decide to do.

5.

noun

1. a long narrow opening

Synonym: crackcrevicefissurescissure

2. a split or indentation in something (as the palate or chin)