让厨房计时器开始计时。Set the kitchen timer going.这类计时器尚不能算是独立的计时器,还是天文仪器与计时仪器的混合体.These mixtures of astronomical instruments and time - measuring devices cannot be seen as independent time measurers.作为计时器,漏刻的使用比日晷史为普遍.Many ancient...
越南战场上用于毁灭林区的“橙剂”，其成分是二氧杂芑。Dioxin was the ingredient in Agent Orange, used to defoliate Vietnam.火葬会把二氧(杂)芑 、 盐酸 、 二氧化硫和二氧化碳排放到大气中.Cremation pumps dioxins, hydrochloric acid, sulfur dioxide, and carbon dioxide into the air...
一朵小小的浪花飞溅在我的脸上，紧接着更多的浪涌过来。A little wave, the first of many, splashed in my face.海水冲击礁石, 激起高高的浪花.Swashing against the rocks, the breakers sent up a fountain of spray.我们被海水的浪花溅湿.We were wet with the sea spray....
小囊腔内充满清亮 、 淡黄液体.The loculi are filled with a clear, pale yellow fluid.在叶绿体基质中,有许多由膜封闭形成的扁平小囊,称为类囊体.Chloroplast membranes form elongated flattened fluid - filled sacs called thylakoids.脂质体是一种人工制备的磷脂类生化物质,属携有 双层 包膜的脂质小囊.Li...
宫颈涂片检查能够帮上大忙。The cervical smear test is a lifesaver.在直接涂片上致病菌可能不明确.The etiologic agent may not be apparent on direct smear.应作穿刺液涂片染色检查.A smear of the fluid should be stained and examined....