不需要获得老师的许可。
在10分钟的课间，孩子们被班主任刘老师要求坐在自己座位上，如果想要上厕所的话需要先获得老师的许可。
In the 10-minute break, children have been required by the head teacher Liu to sit on theirseats and make an application if they want to answer the call of nature.
在10分钟的课间，孩子们被班主任刘老师要求坐在自己座位上，如果想要上厕所的话需要先获得老师的许可。
In the 10-minute break, children have been required by the head teacher Liu to sit on theirseats and make an application if they want to answer the call of nature.
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