It is difficult to believe that a substance originally found in the bark of the humble willow tree could cause so much heat.
最初来源于柳树树皮的这种成分竟然能够发光发热，实在是叫人难以置信。
It can be difficult to figure out the JNDI tree of a target server if you are unfamiliar with what was deployed there.
如果用户不熟悉这里的部署，那么想弄清楚目标服务器的jndi树是很困难的。
"I recognize that when they are my age, it'll be difficult to find a 'dead-tree book,'" he added.
“我意识到等她们到了我的年纪，就很难再看到纸质书了，”他补充到。
The ideal space for a new hive can be difficult to find: the opening should be small, about 10 meters off the ground, and lead to a 40-liter cavity inside a sturdy, living tree.
一个新的蜂房往往很难寻找：在强壮的活着的树有一个40平方分米大小的腔，开口需要小，离地要100米左右。
Although it is difficult to climb trees, but I still have to climb, because this is a long-famous "best in the world loquat" in tangqi loquat tree!
尽管这株树很难爬，可我还是要爬上去，因为这是长着赫赫有名的“天下第一枇杷”的塘栖枇杷树！
Do not experience wind and rain, not a tree length, from Bai Lian, difficult to steel.
不经历风雨，长不成大树，不受百炼，难以成钢。
It was difficult to cut the tree down with a knife.
用一把刀很难把这棵树砍倒。
She said the tree – which re-rooted itself in 1820 after being blown down in a storm and grew back in an 'inverted S-shape' – was already difficult to get close to because of its shape.
莫伊尼汉表示，这棵苹果树曾在1820年被暴风刮倒过，随后重新生长起来，长成了倒“S”形，这种形状本来已让人难以靠近。
It is difficult to locate a tree typical of a pure species in the arboretum and park collections of the United States and Europe.
当你在美国和欧洲的树木园或公园采集时，很难找到一株典型的纯种树。
Yan, excluding hard a cold, ripe peach flow Dan, Li mature technology disabled, the tree flowers were easy to difficult.
不计辛勤一砚寒，桃熟流丹，李熟技残，种花容易树人难。
The problem of minimum cost multicast tree satisfying bandwidth request and delay-constraint in communication network is a NP-complete problem. It is difficult to be solved by traditional methods.
通信网络时延受限且满足带宽要求的最小代价组播树问题是NP完全问题，传统方法难以求解，一般采用启发式方法求解。
Research on real time rendering of realistic tree is a focus field of computer graphic all the time, because complicate detail structure of tree makes it very difficult to model, store, rendering.
真实感树木实时绘制研究一直以来都是计算机图形学的一个热点领域，因为树木复杂的细节结构使其无论是在建模、存储还是绘制上都存在相当大的困难。
Research on real time rendering of realistic tree is a focus field of computer graphic all the time, because complicate detail structure of tree makes it very difficult to model, store, rendering.
真实感树木实时绘制研究一直以来都是计算机图形学的一个热点领域，因为树木复杂的细节结构使其无论是在建模、存储还是绘制上都存在相当大的困难。
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