應(yīng)該是some time later吧,主要是區(qū)分sometimes,some time,some times,sometime的區(qū)別：
（1）sometimes的意思是“有時(shí)”,是副詞.例如：
Sometimes he comes by bike and sometimes by bus.
他有時(shí)騎車來,有時(shí)乘公共汽車來.
（2）sometime也是副詞,意思是“在某個(gè)時(shí)候”.可用于一般過去時(shí)與將來時(shí).例如：
You can hand in your homework sometime before Friday.
你可以在周五前某個(gè)時(shí)候交作業(yè).
（3）some time是名詞短語,它的意思是“一段時(shí)間”.例如：
I'll be away for some time.我將離開一段時(shí)間.
（4）some times也是一個(gè)名詞短語,time在這里用作可數(shù)名詞,意思是“次數(shù)”.
some times的意思是“幾次”.例如：
I have been to the Great Wall some times.
我去過長城幾次.