What is the translation of " ARE DIFFICULT TO DETECT " in Chinese?

• 很难被发现
• 难以探测
• 难以察觉
• 难以检测

Examples of using Are difficult to detect in English and their translations into Chinese

However, small tumors are difficult to detect.
但对小腺瘤则难以确诊。

ELANs are difficult to detect because they are so diffuse, Prochaska said.
Prochaska说，ELANs很难发现，因为它们是如此的漫长。

MOTAPM with low metal content are difficult to detect.
金属含量低的非杀伤人员地雷难以探测。

Antineutrinos are difficult to detect and we cannot do that directly.
反中微子很难探测到，我们不能直接做到这一点。

Fraud and cybercrime are using advanced technologies and techniques which are difficult to detect.
欺诈和网络犯罪通常使用的是难以发现的先进技术和手段。

Road-mobile missile units are difficult to detect, even by satellites.
而公路机动导弹发射装置很难被探测到，即便使用卫星也很难发现他们。

They are difficult to detect since the vast majority of them pass completely through the Earth without interacting.
它们极难探测，因为大部分能完全穿越地球不受任何限制。

Violence and abuse against women in rural settings are difficult to detect and even harder to eradicate.
在农村地区侵害妇女的暴力和虐待行为难以察觉，根除更难。

Although Watering Hole attacks are still not as common as others, they pose a considerable threat since they are difficult to detect.
虽然水坑攻击不一定常见，但它们确实构成了重大威胁，因为它们很难被发现。

While black holes are difficult to detect, the region around them gives off telltale X-rays.
尽管黑洞难以探测,但它们的周围会发出剧烈的X射线辐射。

Organized criminal groups will make every effort to ensure that their operations are difficult to detect and contain.
有组织犯罪集团会尽一切努力确保它们的行动难于查明和遏制。

Unfortunately, featured snippets are difficult to detect, let alone track- especially for large sites.
不幸的是，所选择的片段很难被检测，更不用说跟踪--尤其是大型网站。

Vulnerabilities at such a low level are particularly troubling, as they are difficult to detect and can do significant damage.
虽然这种漏洞非常低级却极其麻烦，因为它们难以被发现并且可以造成巨大损失。

Such plots are difficult to detect because they don't require large conspiracies of people whose emails or phone calls can be intercepted.
这样的情节很难被发现，因为它们不需要大量阴谋的人可以拦截其电子邮件或电话。

In humans, colon cancer often spreads to the liver and forms small tumors that are difficult to detect, similar to ovarian tumors.
在人类中，结肠癌常常扩散到肝脏并形成难以检测的小肿瘤，类似于卵巢肿瘤。

MOTAPM with low metal content are difficult to detect; consequently clearance is expensive and time-consuming.
金属含量低的非杀伤人员地雷难以探测，因而，排雷行动费用昂贵而且耗费时间。

The operations behind these crimes are very sophisticated and the crimes are difficult to detect and are sometimes without an individual victim.
这些犯罪背后的运作非常复杂，犯罪行为难以察觉，有时并无个人受害者。

Explanation: Techniques are difficult to detect and might occur in uncommon use-cases(e.g., patching, anti-malware, anti-exploitation software).
解释：技术很难检测，并且可能出现在不常见的用例中(例如，补丁、反恶意软件、反漏洞利用软件)。

Rather, these evolutionary effects are difficult to detect, as they are reflected in a population's genetic composition.
只是这些进化结果很难被察觉，因为它们存在于人类的遗传基因组合之中。

Such plots are difficult to detect as a result of they don't require massive conspiracies of individuals whose emails or cellphone calls can be intercepted.
这样的情节很难被发现，因为它们不需要大量阴谋的人可以拦截其电子邮件或电话。

MOTAPM with low metal content are difficult to detect; consequently clearance is expensive and time-consuming, the likelihood of missing a mine is increased.
难以探测金属含量低的非杀伤人员地雷；因此排雷费用高、时间长，漏排地雷的可能性增加。

As both techniques are difficult to detect they make excellent choices for attackers and provide a challenge for even the best detection teams.
由于这两种技术都难以检测，因此它们为攻击者提供了很好的选择，甚至对最优秀的检测团队也是一种挑战。

Breast cancer can often be difficult to detect in its early stages.
乳腺癌在其早期阶段往往很难被发现。

CKDu is deadly because it is difficult to detect.
CKDu部分是致命的，因为它很难被发现。

It is called passive sniffing because it is difficult to detect.
被称为被动嗅觉，因为它很难被发现。

EPO is difficult to detect.
这是因为EPO比较难检测出来。

Pancreas cancer is difficult to detect and spreads quickly.
胰腺癌很难诊断并迅速传播。

This cancer is difficult to detect in its early stages.
这种癌症在早期阶段很难发现。