A lot of these are listed as optional.
很多这些被列出象任意。
Is that optional course as hard as everybody says?
那门选修课真像大家说的那么难吗？
You don't create the obligations for the policy, as they are optional.
不用为策略创建义务，因为它们是可选的。
This field is optional, as are all the others.
该区域是可选的，其他所有的区域也是可选择的。
The mistake is to consider this as an "optional" activity.
将其考虑为“可选的”活动就错了。
As a second argument, it can also accept an optional pthread_mutexattr_t pointer.
第二个参数，可以接受一个可选的pthread _ mutexattr_t指针。
Note that the optional message would be shown as the result of an error thrown.
注意，可选的消息（message）将作为错误抛出的结果显示出来。
We will not, however, treat this project as an extracurricular or optional activity.
但是，我们不会将这个项目当作业余的或随意的活动来对待。
Optional parameters may include information such as character set encoding or language.
可选参数可能包含诸如字符集编码或语言等信息。
Another optional view is available as a separate pane.
另一个可选的视图可以作为单独的窗格使用。
Simply put, women are behaving as if fathers are optional.
简而言之，妇女们的举止说明了好像父亲是可选的。
As with the IRR function, guess is an optional argument.
与irr函数一致预测值是可选参数。
The relationship is also specified as not optional.
此关系也指定为不可选。
I choose swimming class as my optional subject.
我把游泳课作为我的选修课。
Example: Adding optional field country to the create operation as follows.
示例：向create操作添加可选字段country，如下所示。
It even includes Google as an optional search target (engine).
它甚至将Google设置为了可选搜索目标(引擎)。
Mark the chunk number 4 as extendable (the keyword "on" is optional).
将块号4标记为可扩展(关键字“on”可选)。
Music optional course is used as an important approach in musical education for college students.
而音乐选修课正是普通高校对大学生进行音乐素质教育的重要途径。
Great Wall cable car ( optional). 2 Tips to the guide and driver as your wish.
八达岭长城缆车（自由选择），导游司机小费（客人自愿）。
Is that optional course as hard as everybody says?
那个选修课真的就像每个人说的那样难吗吗?；
Is that optional course as hard as everybody says?
那个选修课真的就像每个人说的那样难吗吗?；
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