four 四级六级

In 1790 the new nation had fewer than four million people.

1790年时这个新成立的国家的人口不到百万。

The gardener estimated that it would take him four hours to weed the garden.

园丁估计他给花园除草需要个小时。

Four compounds were elucidated as glaucocalgxin A,oleanolic acid,ursolic acid and daucosterol.

分离得到4个化合物，为蓝萼甲素、齐墩果酸、乌苏酸和胡萝卜。

England exceeded most people's expectations by reaching the last four.

英兰出乎多数人的预料，挤入了前。

Mike can knock over three or four of those simple drawings in a day.

迈克一天可完成三张那样简单的图画。

The recommended dosage is one tablet every four hours.

规定剂量为每小时服一片。

This lesson is divided into four units.

这一课分为个单元。

Four years have elapsed since he went to London.

自从他去了伦敦, 已过了年。

I've got only four diamonds in my hand.

我手里仅有张方块牌。

Berlin was divided into four sectors after the war.

战后柏林分成了4 个区。

This person was no other than Babet, one of the four heads of Patron Minette.

那收件人正是巴伯，猫老板的巨头之一。

She is four years senior to me.

她比我大岁。

There are two pints in a quart and four quarts in a gallon.

一夸脱是两品脱，而一加仑是夸脱。

There are four options in our college.

我们大学里有门选修科。

These four posts sustain the entire building.

这根柱子支撑着整座建筑物。

Roosevelt was elected four times to the presidency of the United States.

罗斯福连续当选届美国总统。

Four new triazol organic phosphorus compounds with the general formula(I) have been prepared.

合成了种标题化合物，探讨了其合成方法。

That young writer churns out about three to four new books every year.

那位年青作家每年能赶写出三部新书。

The vacuum cleaner has four different attachments.

吸尘器有个不同的附件。

He come with his wife, six children, four dog and various other impedimenta .

他来时携妻子、六个孩子、条狗以及各式各样的累赘什物。