1.He has been unaccountably delayed.

他被莫名其妙地耽誤了。

2.The train stopped unaccountably; shortly afterward a ticket inspector began; the inspector's face was vaguely familiar.

列車無故停駛，不一會兒又開始查起票來，查票人的臉有些眼熟。

3.One characteristic of this year's Cannes is that many of its finest films were unaccountably left out of the main competition.

本屆戛納電影節(jié)的一大特色就是許多優(yōu)秀電影都莫名其妙地無緣角逐主要獎項。

4.Last year he told the American Society of Newspaper Editors that “as an industry, many of us have been remarkably, unaccountably, complacent”.

去年他對美國新聞報紙編輯社團說：“在這個行業(yè)，我們很多人都毫無原因地沾沾自喜”。

5.Unaccountably, he made no reference to the sufferings of Sri Lankan Tamils even though nearly 300, 000 of them have been displaced from their homes and are now miserably interned in camps.

令人費解的是，他并未提及斯里蘭卡泰米爾人的遭遇。近300000名泰米爾人背井離鄉(xiāng)，現(xiàn)在悲慘地生活在難民營里。

6.The book unaccountably marked an epoch in my young life.

該書莫明其妙地成了我的童年生活中一個新時期的標志。

7.If you find yourself unaccountably laughing, for instance, you could be overdosing on manganese.

比如，如果你發(fā)現(xiàn)自己無緣無故地大笑，那可能是錳攝入過多。