1.missing
2.if something is unaccounted for, you are unable to explain what happened to it or where it is
1.At least one person who worked in the building was unaccounted for and two people were hospitalized, fire officials said.
至少一位在大楼里办公的人员下落不明，两人被送往医院，据消防官员所说。
2.Small as the percentage might be, half of the ordinary baryonic matter is unaccounted for.
这可能是个很小的百分比，有一半的普通重子物质还没有考虑到。
3.At least 150 remain unaccounted for, including the head of the U. N. mission, Hedi Annabi.
至少还有150人下落不明，其中包括联合国海地维和特派团团长安纳比。
4.At least 1, 500 people were reported to have died and thousands more were still unaccounted for.
日本大地震和海啸已经造成至少1500人死亡，更多人目前仍然下落不明。
5.The storm triggered a mudslide that buried a remote mountain village, leaving at least 400 people unaccounted for.
台风引发的泥流掩埋了一个偏远的山村，至少有400人逃离【400人下落不明】。
6.Locals say that the money the dead are carrying goes unaccounted for, too.
当地人说，死者携带的金钱下落不明。
7.A passenger train with an unknown number of people aboard was unaccounted for on a line outside Sendai, Kyodo News reported.
一列客车，载员人数未知，已在仙台附近失去联系，下落不明。
8.Secretary Powell said hundreds of U. S. citizens remain unaccounted for, though they are not necessarily among the casualties.
鲍威尔国务卿说，数百名美国公民仍然没有消息，尽管他们未必就在伤亡者之列。
9.Police have said the death toll may rise to more than 200, with around 50 people still unaccounted for.
警方称，死亡人数可能升至200余人，因大约50人依然下落不明。
10.Thousands are still unaccounted for - including hundreds of tourists - while many remote towns and villages have not been reached.
目前仍有数千人下落不明——其中包括上百名游客——同时还有许多偏远山村和小镇伤亡情况未被计算上。