1·Spring is green, including green trees and green grasses.
春天是绿色的，绿色的树木，绿色的草地。
2·"In the spring, it's trees; the summer, grasses; and fall, weeds." Being stuck indoors all winter also may cause trouble for those allergic to dust and pet dander, he adds.
“春天时，过敏原往往是树，夏天就是草地，秋天就变成杂草了，”他还补充道，整个冬天都待在家里的人也会因为灰尘或者宠物毛屑而感染过敏。
3·Native grasses, a natural habitat for badgers and coyotes, still thicken the sod.
原生的草地上栖息着獾和野狼，草皮仍在变厚。
4·Long before the first Europeans arrived in the New World, a strange looking animal lived on the rich grasses of the western plains.
很久以前，那时首批欧洲人还没到达新大陆，一种外形特别的动物生活在西部平原肥沃的草地上，。
5·The researchers also placed a sweet-smelling spray on grasses near other ponds. But that spray contained no boric acid.
研究人员也在其他池塘附近的草地上喷洒了一种有甜味的喷雾。不过这种喷雾中不含硼酸。