A teen might join in a volunteer project because his or her friends are doing it.
青少年参加志愿者项目的原因可能是他或她的朋友也参加了这个项目。
I said to him, "Tyler, why not join in our discussion instead of having one of your own?"
我对他说：“泰勒，与其自己另外探讨，何不加入我们的讨论呢？”
Get up and join in the activities by pushing a jogging stroller, hitting the hiking trails, climbing the jungle gym or swimming in the lake.
起来，加入到活动中去，推着婴儿车慢跑，到健行步道，爬爬攀登架，或者到湖里游泳。
The United States says they are not prepared to join in normalizing ties with their former enemy.
美国声称他们不准备与他们的前敌建立正常化的关系。
More than 800 students wished to join in this test, and 400 were chosen.
有800多名学生希望参加这次测试，其中400人被选中。
Even if there is no curve, cheating "poisons" the classroom, and others may feel pressured to join in.
即使没有统计成绩的曲线图表，作弊也会“毒害”课堂，其他人可能会感到竞争压力过大而加入作弊的行列。
The moment the children tried to join in they had to play by themselves, for the mermaids immediately disappeared.
孩子们一想加入，他们就只得自己玩了，因为美人鱼们马上就不见了。
If more people join in the trend to ride bicycles to work then the air quality will be improved notably.
如果更多的人加入骑自行车上班的行列，那么空气质量将明显改善。
As a result, many primary schools, especially those in big cities, do not let students join in outdoor activities during breaks, fearing that they might get hurt.
因此，许多小学，特别是那些大城市的，不让学生在休息期间参加户外活动，担心他们可能会受伤。
We've got a keyboard, and someone who plays, but if you'd like to join in the singing, you'd be very welcome.
我们已经有了电子琴和演奏的人，但如果你想加入我们的演唱，我们将非常欢迎你。
You may be the only younger one in your year, but, you know, we have a lot of after-school activities you can join in.
你可能是你们年级里唯一一个比较年轻的孩子，但是，你知道，我们有很多课外活动，你也可以参加。
For example, if you know your classmates are interested in an upcoming event, learn about it so you can join in the conversations.
例如，如果你知道你的同学对一个即将到来的事件感兴趣，尝试了解它，这样你就可以加入到这场对话中。
He is encouraging others to join in.
他正在鼓励其他人加入进来。
If you do, why not join in a panda volunteer program?
如果你喜欢，为什么不加入一个熊猫志愿者项目呢？
I'd like to invite you to join in our Chinese Culture activity.
我想邀请你参加我们的中国文化活动。
They join in a large evening party to welcome the traditional new year.
他们参加一个大型晚会来迎接传统的新年。
My Yearbook users can join in the fun by sending messages and "collecting" friends.
我的年鉴用户通过发送信息和“集”友可以体会其中的乐趣。
Each of the students who volunteered to join in this activity got a bracelet.
每个自愿参加这个活动的学生都得到了一个手镯。
He also writes articles, hoping that more people will join in protecting natural ecosystems.
他也写文章，希望更多的人加入保护自然生态系统的行列。
While at camp students will join in classes and activities on the rope course.
在夏令营期间，学生将参加课程和绳索课程的活动。
After that, I didn't want to join in any class activities for a long time.
从那以后，我很长一段时间都不想参加任何班级活动。
Head over and ask if you can sit there, then join in on the conversation.
走过去询问你是否可以坐在那里，然后加入到对话中。
He led a student team to join in a competition for the "empty plate" campaign.
他带领了一个学生团队参加“光盘“行动比赛。
Boys and girls, join in the summer camp, and you will develop some basic life skills.
同学们，参加这个夏令营吧，你们会学到一些基本的生活技能。
The next day, with their potatoes, all the students went to school to join in the game.
第二天，所有的学生都带着他们的土豆去学校参加游戏。
Wanting to join in the fun, another child went up to Jenny and started singing the rhythm.
另一个孩子想要一起玩乐，走到珍妮面前开始随着节奏唱歌。
To open their minds, Mr.Xiong encouraged them to join in a "Who's the King" national soccer game.
为了开阔他们的视野，熊老师鼓励他们参加一场“谁是王者”全国足球赛。
Luckily, many volunteers from all over the world came to Qomolangma to join in the clean-up activity.
幸运的是，许多来自世界各地的志愿者来到珠穆朗玛峰参加清理活动。
The same thing happened—one or two of the children would appear and join in the gardening from time to time.
同样的事情发生了——孩子中的一两个会时不时地出现并加入到园艺工作中。
The same thing happened—one or two of the children would appear and join in the gardening from time to time.
同样的事情发生了——孩子中的一两个会时不时地出现并加入到园艺工作中。
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