If more than one species is competing for a scarce resource, the competing species usually switch to different alternative resources.
如果一个以上的物种竞争稀缺的资源，竞争的物种通常会转向不同的替代资源。
Considered to be a less dangerous alternative to tobacco, "e-cigarettes" are taking over the West as more and more people switch over when trying to kick the habit.
随着越来越多的人开始戒烟，被认为危险程度更小的替代物——电子烟在西方国家流行起来了。
Other alternative input devices include single switch devices, devices that track head movements, and alternative keyboards for persons with mobility impairments.
其它可选择的设备包括单一切换设备、跟踪头部移动的设备，和用于行动困难的人可选择的键盘。
Ukraine said it would switch heating to fuel oil as other European countries began a desperate search for alternative supplies, with Turkey turning to Iran.
乌克兰宣布，转用燃油供热，因为欧洲其他国家已开始有点不顾一切地搜寻可替代的供应商，从土耳其供应转向从伊朗供应。
They found that the p53 gene makes not only the well-established p53 protein, but also an alternative "control switch" variation of the p53 protein - known as an isoform.
他们发现p53基因不仅产生大家熟知的p53蛋白质，同时还产生一种p53蛋白质变换“控制开关”的变种——对碘氧基苯甲醚。
Whereas Zhang's family used to spend hours seeking, chopping and carrying firewood, the switch to alternative energy has enabled them to save the equivalent of 100 working days, he estimated.
但是张晨贵一家过去找柴，劈柴，搬运木柴的生活已经被打破了，他估计，用上再生能源所带来的生活转变让他一下子拥有了100个工作日的空闲时间。
Taxpayers could either stick with the present code or switch to a massively simplified alternative, with much lower rates but few exemptions or deductions.
纳税人可以选择沿用原有系统，或是改用另一个大幅简化的系统，后者税率较低，但几乎没有任何免税额和可抵消的部分。
Alternative approaches to this problem exist, such as explicit version parameters you can define during compilation to switch between header versions.
要解决这个问题还有其他一些方法，例如在编译时明确定义版本参数，从而可以在不同版本的头文件之间进行切换。
We also hope that this actual attack against SHA-1 can eventually convince the industry as soon as possible to switch to a more secure alternative, such as SHA-256.
我们亦希望这一针对SHA - 1的实际攻击案例能够最终说服整个技术业界尽快转向更为安全的替代性方案，例如SHA - 256。
Owners can remotely switch to an alternative password if they fear that the thief has also got hold of the access details.
如果主人害怕小偷已经获得详情，他们可以遥控切换到另一个密码。
The tree switch configuration shown in Figure 1-13 is an alternative to the cascade configuration.
树形开关配置如图1-13所示，它是一种选择性的级联配置。
As an alternative, you can add two resistors and use an SPST switch to disable or enable the circuit.
另一种方法，可以增加两个电阻，用一个SPST开关禁止或使能电路。
The alternative approach is to switch one collimator for another midway through treatment, altering the field size.
另一种可供选用的方法是在治疗过程中通过更换不同类型的准直器来改变射野大小。
Owners can remotely switch to an alternative password prompt if they fear that the thief has also got hold of the access details.
业主可以远程切换到另一种提示输入密码，如果他们担心小偷也得到了访问的细节举行。
Owners can remotely switch to an alternative password prompt if they fear that the thief has also got hold of the access details.
业主可以远程切换到另一种提示输入密码，如果他们担心小偷也得到了访问的细节举行。
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