1.
The climber thinks that the difficult thing is climbing down
登山者认为下山难。
2.
Friend may meet, but mountain never greet.
山与山难相逢，友与友可会面。
3.
It was a long trudge up the hill.
那段上山的路很难走。
4.
It's a long hard slog up the mountain.
上山的这段路很难走.
5.
an inaccessible mountain retreat
很难抵达的山间僻静处
6.
What is Bred in the Bone will never come out of the fresh.
"江山易改, 本性难移"
7.
A leopard cannot change its spots
江山易改,本性难移
8.
You can change mountains and rivers but not a person's nature.
江山易改，本性难移。
9.
The leopard can never change its spot.
江山易改，秉性难易。
10.
The climb was not difficult but long.
山并不难爬，就是路长。
11.
toiling over the mountains.
艰难地跋涉于山岭之间
12.
The climb down was even harder than the climb up.
那一次下山比上山还艰难。
13.
a mountain climber who specializes in difficult climbs.
专攀登难登的高山的登山运动员。
14.
This mountain is difficult to climb/It is difficult to climb this mountain.
这座山很难爬[爬这座山可不容易].
15.
They faced formidable difficulties in their attempt to reach the mountain summit.
他们在试图登上山顶时遇到了难以克服的困难。
16.
The wolf changes his coat, but not his disposition.
豺狼换张皮，本性却难移。江山易改，本性难移。
17.
The most difficult mountain to cross is the threshold.
最难越的山就是每件事的开端；万事开头难。
18.
I've been up Lion Rock a couple of times, but it isn't a difficult mountain to climb.
我上过狮子山几次，但那不是什么难爬的山。