But for now, she appears to have vanished without a trace.但目前，她似乎憑空消失，毫無蹤影

appear to看來像是； 看來似乎

They appear to be able to handle the problem.

他們似乎可以處理這個問題。

This novel appeared to have been huddled together.

這部小說看來是草草寫成的。

That girl is involved, and I am dead certain of it.我敢確定那女孩逃不了干系

certain of確信 ...

Have you made certain of the time of the train?

火車開車時間你搞清楚了嗎？

I'm not certain of the truth of the matter.

我不相信這種情況是真的。

相關短語make certain of確定(弄清楚；弄確實)

I want to make certain of the time of his arrival.

我想確切知道他到達的時間。

Please make certain of the date of the meeting.

請把開會的日期弄清楚。