Wetlands are areas of marshy, swampy land, areas where water covers the soil, or is present either at or near the surface of the soil for a large part of the year.
湿地是指多沼泽的区域，软而湿的陆地，一年中的大部分时间有水覆盖着土壤、或是有水存在于土壤表面或接近土壤表面的地方。
This germ—which is present in soil and water, not feces—is responsible for "swimmers ear", an itchy or painful inflammation of the ear.
这种细菌——存在于泥土和水中，而非粪便——是造成“游泳耳”的主要原因，症状是耳朵发痒疼痛和红肿。
Unlike nutrients that are found only in a few foods, protein is present in all foods.
与只有少数食物中含有的那些营养物质不同，蛋白质存在于所有食物中。
The unity of opposites is present everywhere.
对立统一无处不在。
The food served symbolizes the occasion and reflects who is present.
提供的食物象征着这个场合，也反映了在场人的地位。
没有错语症存在。
A true epithelial tissue is present only in a single layer of cells held together via occluding junctions called tight junctions.
真正的上皮组织仅存在于通过称为紧密连接的咬合带而保持在一起的单层细胞中。
If an activity session is present on invocation, the component will be added.
如果活动会话是在调用时出现的，则会添加该组件。
Moreover it can tell you whether life was present at some point-and even whether it is present now.
此外，它还能告诉人们，某种生命出现于哪个时间点，以及现在是否仍然存在。
If a global transaction is present on invocation the component will be added to this global transaction scope.
如果在调用时存在一个全局事务，则该组件会被添加到该全局事务范围。
The code responsible for displaying the top window and keeping its attributes is present in this file.
负责显示这个天窗并保持其属性的代码出现在这个文件中。
The first time, you must check if the archived file is present.
第一次，您必须检查是否存在存档文件。
If a memory leak is present in your application, the heap memory usage steadily increases over time.
如果您的应用程序出现了内存泄漏，堆内存使用量将随时间稳步增长。
Mind the form of the verb there: it is present tense intentionally.
注意一下这里动词的形式：我故意用了一般现在时。
Of course, you'll undoubtedly remove it from the diagrams where it is present, too.
当然，您也将无疑地把它从它出现的图中删除。
If no namespace is present, it assumes DS 1.0 compatibility.
如果文件中没有出现命名空间，就认为其兼容DS 1.0。
No ambiguity is present in the schema.
在schema中没有出现不确定的内容。
Unless a .toc file is present, the installp command will not know which software is present for installation.
如果 .toc文件不存在，installp命令就不知道有哪些软件可以安装。
Each column is only displayed if the corresponding element in the loaded WSIL inspection document is present.
每个列都仅当所装入的WSIL检查文档中存在相应的元素时才会显示出来。
Passivity: this will not declare the queue but will cause an exception if no such queue is present.
惰性：如果没有声明队列，那么在执行到使用的时候会导致异常，并不会主动声明。
In tests, they modeled a DNA version of an XOR logic gate that generates an output when one of two inputs is present, but not when both or neither is present.
在试验中，他们构建了一个DNA版本的“异或”逻辑门，当两个输入端中有一个有输入时，产生输出；但当两个输入端都有或都没有输入时，就不会产生输出。
If the lock file is present, delete it before restarting the server.
如果锁文件存在，应该在重新启动服务器之前删除它。
You can also test whether the file or directory on the remote host is present.
还可以检查远程主机上的文件或目录是否存在。
If myrosinase is present, sulforaphane is released in the ilium, the first part of your digestive system.
在芥子酶存在的情况下，萝卜硫素在消化系统的第一部分—髂骨中释放。
Passivity: this will not declare the exchange but will cause an exception if no such exchange is present.
惰性：如果没有声明交换器，那么在执行到使用的时候会导致异常，并不会主动声明。
But this argument belies the extreme variability that is present in human behavior.
但是这个理由不足以证明在人类行为中表现出的极端可变性。
You can just look at that source code and know what data is present.
这时只需要查看源代码就知道这些数据是什么了。
The requirement is present in the original document but was removed in the branched-off document.
需求会呈现在原始的文件中，但是会从分支的文件中删除。
The unsynchronized version is present only to show the overhead of contention.
提供非同步的版本只是为了展示争用的开销。
The unsynchronized version is present only to show the overhead of contention.
提供非同步的版本只是为了展示争用的开销。
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