单词：sand-binding grass
单词：sand-binding grass 相关文章
Some people prefer clay tennis courts, others like grass. Yael and Don discuss the difference on this Moment of Science. Y: Hey Don, what do you say to a game of tennis later? D: Sure thing, Yael. But it has to be a clay court, okay? Y: But the grass
英语时差8，16
美国加州梅林镇的海岸有一种名叫泰德斯茺（Tidestrom）的豆科植物，正在垂死挣扎。它们的生存正在受到一种外来植物的威胁，名叫欧洲滩头草。 At Point Reyes National Seashore in Marin County, Califor
60秒科学
This is Scentific American's 60-Second Science, I'm Steve Mirsky, got a minute? At Point Reyes National Seashore in Marin County, California, a plant called Tidestroms lupine is holding on for dear life. Its survival has been threatened by the appear
Scientific American(八)月
Lesson 34 Barley 第34课 大麦 I know some children who are very fond of growing seeds of all kinds in pots. Sometimes they fill a flower-pot rather more than half-full with moist sand. On the top of this damp sand they sprinkle some grains of barl
英国学生科学读本