whilst 四级六级

He wrote this whilst invigilating a biology examination.

这是他考试考场监考时写的。

Whilst the heavy ploughman snores, All with weary task fordone.

农夫们鼾息沉沉，完毕一天的辛勤。

Guests can make use of Quinta De Vigia's lovely outdoor pool area whilst admiring the sea views.

您可于带有潜水区的奥林匹克标准尺寸的游泳池畅游，而您的孩子则可儿童游泳池玩乐。

Glucose cyclizes to form asix- membered pyranose ring whilst five –carbon surgars and six-carbon ketose sugars (ketohexoses) such as fructnose rings.

状结构 四碳糖和更大的糖能化，醛基或酮基与糖的另一碳原子上的羟基反应。

In the later system the front ranks locked shields and presented a hedge of thrusting spears whilst the rear ranks kept up a continual barrage of missiles over the heads of the front rankers.

晚期的作战体系中，面几排使用盾墙和长矛，后面几排则不断地排的头顶投掷箭矢。