1.
It is a summit difficult of access, but not inaccessible.
这是一个难以达到的高峰，但并不是高不可攀的。
2.
The procedure described above for obtaining the gain defies simple analytical approaches.
上述求得增益的步骤通过简单的解析方式是难以达到的。
3.
Monnet always liked to check on whether his friends and disciples were living up to his impossibly high standards.
莫内总喜欢检查他的朋友和弟子们是否达到了他所规定的难以达到的新目标。
4.
as by falling into inaccessible caves,
如掉进难以到达的洞穴，
5.
to an inexpressible degree.
达到难以形容的程度。
6.
(informal) difficult to reach or attain.
（非正式）难以达到或获得。
7.
The largest shakings are almost incomprehensible in scale.
一些最强烈的震动可以达到难以置信的规模。
8.
Pedagogic classroom sets an example the result that explains very inaccessible synchronism, use multimedia to be able to be achieved.
教师课堂示范讲解很难达到同步的效果，利用多媒体可以达到。
9.
The world’s coldest continent, and the most difficult to reach, is Antarctica.
世界上最寒冷的和最难以到达的洲是南极洲。
10.
Rome is not difficult to get at
罗马是不难到达的。
11.
"I have been most anxious to see you, that I might repeat orally the thanks writing can so ill express."
“我真想见到您，以便亲口再向您表达一番那用文字难于表达的谢意。”
12.
an unattainable ideal
难以达成 [实现] 的理想
13.
I can't tell you how sorry I am.
我实难以表达我的歉意。
14.
arousing desire or expectation for something unattainable or mockingly out of reach.
引起对一些难以达到或力所能及范围以外的事情的想望或期望的。
15.
be difficult of approach
(地方)难达到的，(人)难于接近的
16.
Stupidity was as necessary as intelligence, and as difficult to attain.
愚蠢和聪明同样必要，也同样难以达到。
17.
This was a hard requirement to make or to procure.
这是一个难以出口，也难以办到的要求。
18.
Even with their most sensitive apparatus, human chemists cannot approach this perfection.
人类的化学家即使利用最灵敏的仪器，也难以达到这样完善的程度。