sighless

英式音标：

美式音标：

词义：

sighless

adj.sigh的变形

sigh[sai]

vi.

叹气，叹息：

to sigh with helplessness

无奈地叹息

发出叹息般的声音；(风等)呼啸，悲鸣：

sighing wind

呼呼的大风

悲叹，痛惜：

to sigh over something

为某事而悲叹

想念；渴望：

to sigh for hometown

想念家乡

vt.

叹息着表示；悲叹，痛惜：

to sigh one's youth lost early

悲叹青春早逝

在叹声中浪费(或虚度)：

to sigh away one's days

在叹声中虚度光阴

n.

叹气，叹息

叹息声

叹息般的声音；(空气等的)流动声；(风等的)呼啸(声)，悲鸣(声)

用法：

权威例句

On a signless Laplacian spectral characterization of T -shape trees

Some graphs determined by their (signless) Laplacian spectra

The (signless) Laplacian spectral radius of unicyclic and bicyclic graphs with n vertices and k pendant vertices

On some forests determined by their Laplacian or signless Laplacian spectrum

Signless Laplacian spectral radii of graphs with given chromatic number

Sharp bounds on the signless laplacian spectral radii of graphs ☆

On the distance and distance signless Laplacian spectral radii of bicyclic graphs

THE SUN GRAPH IS DETERMINED BY ITS SIGNLESS LAPLACIAN SPECTRUM

On the reduced signless Laplacian spectrum of a degree maximal graph

Relation between Energy and (Signless) Laplacian Energy of Graphs

造句：

1. "I have never knowingly exposed any patient to needless risks," he said.

他说：“我从未故意将任何病人置于不必要的风险境地。”

来自柯林斯例句

2. He repeated that he had never knowingly taken illegal drugs.

他再三强调自己从没有故意吸毒。

来自柯林斯例句

3. The company has consistently denied it had knowingly broken arms embargoes.

这家公司一直否认自己是有意违反武器禁运规定。

来自柯林斯例句

4. Ministers must not knowingly mislead Parliament and the public.

大臣们不应该故意地误导议会与公众。

来自柯林斯例句

5. He smiled knowingly.

他会意地笑了。

来自柯林斯例句

[ knowingly 造句 ]