1.
In this paper, the eigenvalues of the normalized Laplacian and the toughness of graphs are studied and the relation of inequality between of them is given.
研究了图的正规拉普拉斯矩阵特征值与图的坚韧度，并给出了它们之间的不等式关系。
2.
Every 2-tough graph is fractionally Hamiltonian
2-坚韧图是分数Hamiltonian
3.
Wiry and agile.
柔韧的坚硬且灵活的
4.
strong woody fibers obtained especially from the phloem of from various plants.
尤指来自植物韧皮的坚韧的木质纤维。
5.
of a consistency requiring chewing.
指需要咀嚼的坚韧性。
6.
a tough all-weather faBric.
一种坚韧的全天候织物
7.
Lately, though, an intrepid band of researchers has been trying to remedy that.
而近来一些坚韧不拔的研究者一直试图在修正那种探索。
8.
West Indian shrub or small tree having leathery saponaceous leaves and extremely hard wood.
西印度灌木或小树，有坚韧的圆滑的叶子和特别硬的木头。
9.
Such power of persevering devoted labor as Mr. Casaubon's is not common
卡苏朋先生那种孜孜不倦，坚韧不拔的工作态度并不多见。
10.
Made of or as flexible as withes; tough.
柳条般柔韧的柳条作的，柳条般灵活的；坚韧的
11.
Pesistent people begin their success where others end in failure.
坚韧的人从别人的失败中迈向成功。
12.
an evergreen shrub with leathery leaves.
有坚韧叶子的常绿的灌木。
13.
large tough non-rigid bag filled with gas or hot air.
充满气体或热空气的坚韧的大袋子。
14.
killer instinct
ph.1. 顽强执着的天性;坚韧不拔的精神
15.
What is the secret ingredientof tough people that enables them to succeed?
坚韧不拨的人成功的秘诀是什么？
16.
source of a tough elastic wood.
一种坚硬而富有韧性的木材。
17.
strong lightweight wood of the balsa tree used especially for floats.
轻而坚韧的轻木木料，用于制筏。
18.
tough meat that needs stewing to be edible.
坚韧的肉，需要炖过才能吃。