Sex education is a sensitive area for some parents, and thus it should remain optional.

three optional courses

三门选修课

It is optional with you.

那是你的自由.

A holiday isn't an optional extra. In this stressful, frantic world it's a must...

休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。

The goods are optional, but only one.

这些物品是可以任选的, 但只能选一个.

A variable automatic transmission , Mitsubishi's first , will be optional.

同时也有一款无极变速器作为可选配置.

This model comes with a number of optional extras (= things you can choose to have but which you will have to pay extra for) .

这一型号有一系列可供选择的附件，价格另计。

There are a range of optional units available depending upon work role and work setting.

有一系列的可选单元可根据工作的职责和工作设置而定.

So far, the optional course has a history of 200 years.

选修课从产生到现在已经经历了近200年的历史.

Anyone who fails an elective optional course will be fined 50 Yuan.

选修课不及格者将被处以五十元罚款.

Cultural quality course is a compound optional course that contains moral education and art education.

文化素养课是一门德育和美育相结合的“复合型”的选修课.

Advanced numerical control technology is an optional course of graduate student of mechanical engineering specialty.

现代数控技术是机械工程专业研究生教学的学科专业选修课.

W : Is that optional course as hard as everybody says?

那门选修课象别人说的那么难 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 ?

In Mauritius, English and French are compulsory courses. Many take an Oriental language an optional course.

在毛里求斯, 英、法文是必修课, 此外还有相当多的学生选修一门东方语言.

The Optional Course Fees must be paid by monthly.

业余学校的费用按月支付.

This course is a specialized optional course for overseas undergraduates who major in Chinese.

本课程是为汉语言专业本科的外国留学生开设的一门专业选修课.

This course is a fundamental optional course of animal science specialty.

本课程是动物科学专业的学科基础选修课.

Volleyball is an optional course which teaches students the history and development of this sport.

排球是一门选修课程,通过本课程的学习,学生可以充分了解排球的历史以及发展趋势.

This topic explains only how to find and optionally replace wildcard characters.

本主题仅说明如何查找并有选择地替换通配符.

An automatic feeding equipment can be added optionally to improve work efficiency.

另外可以加装自动送料装置提高工作效率.