我一直看不太懂為何"than"後面放了個"are".
這句話如果我寫,我不會放那個"are"
groups of friends actually joined us for three-week stints and others just linked up with us. Some, whom we hadn't met before the trip at all, tagged on for short bursts - people from the area - who just came along for the ride. But outside the major visitor areas like Toubkal we only met one other group of travellers like ourselves in the whole 96 days.