单词学习：barred 形容词/动词过去分词
barred
/bɑːrd/
adj. 被禁止的；有条纹的；被闩上的
The students were barred from entering the lab without supervision, so they waited patiently for 顾老师 to arrive.
学生们在没有监督的情况下被禁止进入实验室，所以他们耐心地等待顾老师的到来。
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