地衣是一类独特的生物有机体,其体内合成了多种特殊的次生代谢产物,主要为缩酚酸、缩酚酸环醚 、 缩酚酮、二苯并呋喃等类化合物. A lot of secondary metabolites such and were produced by lichens, a class of unique organisms.
Handheld devices are used in a variety of specific contexts.手持设备会用在各种各样的具体情境下.Vector products arise frequently in this book in a number of contexts.在本书的许多场合中经常要出现矢量积.Even seemingly innocuous words are offensive in certai...
这幅图片显示的是从一辆使用正常近光灯的汽车上所看到的景色。This picture shows the view from a car using normal dipped lights.工作人员移到人行道上拍摄这一景色。Crews stray outside to film the view from the pavement.在那家饭店用餐能欣赏到湖边景色，而且那里饭菜也是美味佳肴。The dining room has lake...