If something is seemingly the case, you mean that it appears to be the case, even though it may not really be so.
A seemingly endless line of trucks waits in vain to load up.
一眼望不到头的一排卡车正眼巴巴地等着装货。
You use seemingly when you want to say that something seems to be true.
He has moved to Spain, seemingly to enjoy a slower style of life.
他已移居西班牙,似乎是想过一种节奏较慢的生活。