1·Last but not least, we should call on citizens to take the bus instead of driving a car as much as possible.
最后但同样重要的是，我们应该呼吁市民尽可能选择搭乘公交而非驾车出行。
2·We call on all those attending the world Economic Forum to demonstrate that, while the regime may be indifferent to the suffering of the Burmese people, the world is not.
我们呼吁出席世界经济论坛的所有代表作出表示，虽然缅甸军政权对缅甸人民的痛苦漠不关心，但全世界绝非如此。
3·On this International Day Against Nuclear Tests, I call on all States to take a bold step towards a safer and saner world for all.
值此禁止核试验国际日，我呼吁所有国家迈出大胆的一步，为全人类建设一个更安全、更理智的世界。
4·I therefore call on donors to capitalize on this historic opportunity, and help fund the full implementation of the new polio eradication strategic plan for 2010-2012.
因此，我呼吁各捐助方利用这一历史性机遇，帮助提供资金，来全面实施新的2010 - 2012年消灭脊灰战略计划。
5·We call on world leaders to invest in the plan, which can help move us towards ridding the world of TB.
我们呼吁全球领导人投入此项计划，向我们提供协助，以便在全世界消除结核病。
1·On my way home I call on my friend Jack.
在回家的路上我顺便去拜访了我的朋友杰克。
2·The mayor and the president paid the first call on him.
市长和议长向他作了初次的拜访。
3·What I wanted to ask you was, won't you take me to call on Mr. Toad?
我想问你的是，你能带我去拜访托德先生吗？
4·I've never even ventured to call on him at his own home myself, though I know him so well.
虽然我很了解他，但我从来没有冒险到他家里去拜访他。
5·Then may I call on you at that time tomorrow?
那么明天那时我可以拜访你吗？
1·I think we should figure out some ways to stop people from polluting the river and call on them to fight against pollution.
我认为我们应该要想出一些办法来阻止人们污染这条河，并号召人们同污染做斗争。
2·I think we should think out some ways to stop polluting the river, and call on people to fight against pollution.
我认为我们应该想出一些办法制止他们污染这条河，并号召人们同污染做斗争。
3·Today, we call on you again.
今天我们继续号召你们！
4·Award safety achievements and call on employees to learn from them.
表彰安全工作成绩，并号召员工向他们学习。
5·A conference of fertility experts this month will call on the IVF industry to rethink its approach.
本月一个生育专家研讨会将要号召试管受精行业再次思考它的出路。
1·Every time I call on him, he is out.
我每次去访问他，他都不在。
2·When the Rostovs arrived in Petersburg Boris came to call on them.
当罗斯托夫一家人来到彼得堡时，鲍里斯便去访问他们。
3·Recently, over dinner, he told me a story about an insurance agent who made a cold call on him.
最近有一次吃饭，他跟我说起一个突然访问他的保险经纪。