in a word总而言之

例句：In a word, I can't go out as I have many things to do.

总而言之, 我不能出去, 因为我有许多事情要做。

4.Soldiers fired shots and tear gas to disperse hundreds of protesters who called for Laurent Gbagbo, who refuses to step down, to hand over power.

hand over让与, 移交;送交

例句：He has resigned and will hand over charge of his office today.

他已辞职, 将在今日办移交手续。

They were handed over to a military tribunal for trial.

他们已被交给军事法庭审判。

5.They believe that by analysing the genes of more plants, they'll be able to build up a library of properties, with which plant breeders can create new varieties suited to local circumstances.

build up逐步建立, 增进, 增强,使增大

例句：The pressure on the enemy is building up.

对敌人的压力在不断加强。

1.Witnesses have told the BBC that Libyan troops have opened fire with machine guns and larger-calibre weapons on anti-government protesters in the city of Benghazi, killing a number of people.

killing现在分词作结果状语

现在分词或分词短语做状语时,也可以表示时间、原因、结果、 条件、让步、方式、伴随状况等.其逻辑主语必须和句子的主语一致,有时withwithout 名词或代词宾格 分词也可以表示伴随状况如: