尽管参观者必须在限时之内参观，但排队等待参观的人群有时还是延续了两到三个街区。
The crowds had to be controlled by time-stamped tickets which still resulted in long lines sometime two to three long blocks long.
尽管参观者必须在限时之内参观，但排队等待参观的人群有时还是延续了两到三个街区。
The crowds had to be controlled by time-stamped tickets which still resulted in long lines sometime two to three long blocks long.
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