1.Arnold could detect a certain sadness in the old man's face.

阿诺德能察觉到老人脸上的某种悲伤。

2.The new test should enable doctors to detect the disease early.

新的检验使医生能在早期发现该种疾病。

3.The patrol can detect if something is going down or is about to go down.

巡逻队能发现是否有情况正在发生或即将发生。

4.How can you detect a liar through text messages?

你怎么能通过短信发现一个骗子呢?

5.This gives rats the ability to detect slight smells.

这赋予了老鼠察觉轻微气味的能力。

6.An animal that can't detect danger can't stay alive.

不能察觉危险的动物无法生存。

7.Your sense of smell can also help you detect weather changes.

你的嗅觉也能帮助你察觉天气的变化。

8.In school, we never give a child a chance to detect his mistakes.

在学校里，我们从不给孩子发现错误的机会。

9.But in school, we never give a child a chance to detect his mistakes.

但在学校里，我们从不给孩子一个发现错误的机会。

10.Another thing it uses ultrasound to detect is the size and shape of objects.

它还利用超声波来探测物体的大小和形状。

11.How can scientists detect a particle that interacts so infrequently with other matter?

科学家们是如何探测到一种很少与其他物质相互起作用的粒子的呢？

12.You know that Snort is an intrusion detection system, but how does it detect intrusion?

您知道Snort是一种入侵检测系统，但它是如何检测入侵的呢？

13.Dr. Peter Kastl and his colleagues report that they can use tears to detect drug abuse.

彼得·卡斯特尔博士和他的同事发现，他们可以用眼泪来检测药物滥用问题。

14.His smile had no heart in it, but few eyes were near enough or sharp enough to detect that.

他的笑容里没有一丝一毫的感情，但很少有眼睛能近距离或敏锐地察觉到这一点。

15.As we eat, specialised receptors in the back of the nose detect the air molecules in our meals.

当我们吃东西的时候，鼻子后部的特殊感受器会检测我们食物中的空气分子。

16.They can detect ultrasound; this means that when a bat approaches, the moth can detect the bat's presence.

它们可以探测到超声波；这意味着当蝙蝠靠近，飞蛾可以察觉到它的存在。

17.It is text that enables us to "uncover lies, confusions and overgeneralizations, and to detect abuses of logic and common sense."

正是文本让我们能够“发现谎言、困惑和过度概括，察觉逻辑和常识的滥用。”

18.Each of the preceding techniques provides the researcher with evidence that the infant can detect or discriminate between stimuli.

上述的每一种技术都为研究者提供了证据，证明婴儿能够察觉或辨别不同的刺激。

19.For example, doctors did not have devices allowing them to go inside the human body to detect health problems or to perform delicate surgery.

例如，医生没有能够进入人体内检测健康问题或进行精细外科手术的设备。

20.Garter snakes detect a chemical signal from earthworms—one of their favorite foods—via the VNO, and they use this signal to track their prey.

束带蛇通过 VNO探测到来自蚯蚓（它们最喜欢的食物之一）的化学信号，然后它们利用这个信号来追踪它们的猎物。

21.British researchers claim that a routine eye test carried out by your optician could detect Alzheimer's up to 20 years before any symptoms show.

英国研究人员声称，验光师做的常规眼部检查能提前20年，在任何症状出现前检测出老年痴呆症。