Australia's facing a worsening housing crisis. At the same time, the number of overseas migrant arrivals is at its highest ever since records began. Is increased migration driving up housing and rental prices? - 澳洲的住屋危機持續惡化，與此同時，海外移民的數字也達到了有記錄以來最高。移民增加是否真的帶動了住屋租金上漲？