谢邀!下面有翻译:)<br>Good question!<br>The dissimilarity is not negligible (the difference is important).<br>"Join in" means to participate in an activity.<br>"Join in the chorus (副歌)" (Starting singing at the chorus of the song).<br>"Join" means to link up with a group of people.<br>"Join the chorus (合唱团,chorus = choir)" (Enroll in the choir).<br>I hope this is helpful.<br>**************************************<br>栗子的知乎答案索引:栗子树<br>栗子的微信公众号:E-Speller或者栗子英文(只有精彩的原创)<br>**************************************<br>感谢@SilentLeo的中文翻译:<br>谢邀!<br>这是个很好的问题。<br>这两个词汇的区别是非常重要的,不应该被忽视。<br>“join in”的意思是参与一项活动。<br>“Join in the chorus(副歌)” 意为在副歌阶段开始演唱。<br>“join”意为加入一个团体或组织。<br>"Join the chorus (合唱团,chorus = choir)" 加入合唱团。<br>(chorus是多义词,既有合唱团的意思也有副歌的意思。)<br>希望我的答案对您有所帮助。