Overcast skies portend a rough day for boats on Iceland's Lake Myvatn.阴云密布的天空为冰岛米湖上的船只预示了狂风暴雨的一天.What do these strange events portend?这些奇怪的事件预示着 什么 ?The change did not portend a basic improvement in social condition...
他把塑料袋的两头系在了一起。He tied the ends of the plastic bag together.把瓶子装在塑料袋里，以免洒得到处都是。Put the bottle in a plastic bag in case of spillage.在沙滩上时，将相机用塑料袋包裹起来以防止进沙子。On beaches, keep your camera safe from sand by enveloping it insid...