[ADV 副词]要不然;或者 You use alternatively to introduce a suggestion or to mention something different to what has just been stated.
[ADV with cl]
Allow about eight hours for the drive from Calais. Alternatively, you can fly to Brive.
从加来开车去,要留出大约8小时的时间。或者,你可以坐飞机前往布里夫。
Oxford
al·ter·na·tive·ly★AWL/ɔːlˈtɜːnətɪvli; NAmEɔːlˈtɜːrnətɪvli/adverbused to introduce a suggestion that is a second choice or possibility (引出第二种选择或可能的建议)要不,或者◆The agency will make travel arrangements for you. Alternatively, you can organize your own transport.旅行社将为你安排旅行,或者你也可以自行安排交通工具。al·ter·na·tive·ly/ɔːlˈtɜːnətɪvli; NAmEɔːlˈtɜːrnətɪvli/