meanwhile，adv.同时与此同时其间(比较两方面)对比之下

例句

Meanwhile， my debts were mounting up.

同时，我的债务在不断增加。

likewise，adv.同样地也还亦类似地而且(表示感觉相同)我也是，我有同感

例句

likewise， the poor are not necessarily sad.

同样地，穷人未必悲伤。