whilst 四级六级

He wrote this whilst invigilating a biology examination.

这是他在生物考试考场监考时写。

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

农夫们鼾息沉沉，完毕一天辛勤。

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

可于带有潜水区奥林匹克标准尺寸游泳池畅游，而子则可在儿童游泳池玩乐。

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 四碳糖和更大糖，醛基或酮基与糖另一碳原子上羟基反应。

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.

在晚期作战体系中，前面几排使用盾墙和长矛，后面几排则不断地越过前排头顶投掷箭矢。