Host selling involves blending advertisements with regular programming in a way that makes it difficult to distinguish one from the other.
“销售主持人”这种形式将广告和常规的节目安排以某种方式掺杂在一起，使两者难以被区分开。
It is often very difficult to distinguish between the two.
这两者时常很难去区分。
Some people find it difficult to distinguish right from wrong.
一些人很难辨别正确与谬误。
Subspecies are often difficult to distinguish from one another.
区分不同的亚种是很困难的。
Some people find it difficult to distinguish right from wrong.
一些人认为很难辨对与错。
Human cases of H5N1 may be difficult to distinguish from other illnesses.
H5N1型人类病例很难与其他疾病相区别。
It has, until recently, been very difficult to distinguish between the two.
直到最近以前，要区别开这两者是非常困难的。
Nonetheless, it can be difficult to distinguish between fantasy and reality.
尽管如此，分清幻想和现实可能还是会有难度。
In the short term, it is difficult to distinguish management skill from luck.
短期内，很难区别管理人的技能与运气。
Simple cysts are difficult to distinguish from arachnoid cyst or epidermoid.
单纯的囊肿较难与蛛网膜囊肿和表皮样囊肿相鉴别。
It is difficult to distinguish between inflammatory and metastatic lymph nodes.
鉴别炎性还是转移性淋巴结肿大是困难的。
Color-blind people often find it difficult to distinguish between blue and green.
色盲的人经常发现很难区分蓝色和绿色。
So, one who has attained the top state is difficult to distinguish from anyone else.
因此达到最高境界者是难以与任何其他人区别开来的。
Therefore, the Synchronous vibration is a fault Common but difficult to distinguish.
这使得同频振动成为既简单又难以判别的故障。
At this age children have a rich imagination, but difficult to distinguish between fantasy and Reality.
在这个年龄段的孩子有丰富的想象力，但难以区分幻想与现实。
The artificial rockery showing no artificial trace, is difficult to distinguish between true and false.
而人为的假山不露人工的痕迹，令人真假难辨。
It is sometimes difficult to distinguish between the element of envy itself and the defences against it.
有时候很难区分哪些是嫉羡的防御，哪些是嫉羡本身。
In much of the Delta it has now become difficult to distinguish between politicians, gangsters and insurgents.
在很多富油三角洲地区，现在已经很难区分政客，歹徒和叛军了。
It WAS not difficult to distinguish between George Bush's farewell visit to Europe this week and a victory lap.
乔治·布什本周在欧洲的告别之旅和运动员获胜后绕场一周还是有区别的，这一点不难看出。
Therefore, it is difficult to distinguish between revenue and protective tariffs form economic evidence alone.
因此，但就经济效益而言，很难区分财政关税和保护关税。
Started his network of sea, the often heard friends mention network complexity, personnel difficult to distinguish.
初涉网海时，常听朋友提起网络复杂，人事难辨。
However, this is not always the case, and it is sometimes difficult to distinguish between subsystems and localities.
然而这并不是一成不变的，而且有时也很难区分出子系统和位置。
A couple of times I couldn't see them, because it was difficult to distinguish them from the ones of the other teams.
有几次我看不到车队给我的告示板，因为要把他们和别的车队的告示板区分开来是在很困难。
Sometimes it is difficult to distinguish between application and business logic and connectivity and integration logic.
有时很难在应用程序和业务逻辑与连接和集成逻辑之间进行区分。
Vietcong guerrillas were often difficult to distinguish from civilians and moved effectively in the difficult terrain.
越共游击队经常很难与平民区分开来，并且在复杂的地形中行动迅捷。
In the flood of media attention that biofuels have received, it is difficult to distinguish the facts from the fanfare.
由于生物能源受到媒体的广泛关注，良莠不齐的报道及部分被文字夸张的信息成为了人们认识事实的屏障。
In practice, it may be quite difficult to distinguish stored charge effects (in insulators) from piezoelectric effects.
在实际工作中，区分储存电荷效应(在绝缘体中)和压电效应可能是相当困难的。
Besides, it is difficult to distinguish whether arbitration from an oral agreement is a common law or customary law arbitration.
此外，在实践中，很难区分一个产生于口头仲裁协议的仲裁是习惯法仲裁还是普通法仲裁。
Besides, it is difficult to distinguish whether arbitration from an oral agreement is a common law or customary law arbitration.
此外，在实践中，很难区分一个产生于口头仲裁协议的仲裁是习惯法仲裁还是普通法仲裁。
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