这种材料有不同的名称,如灰 、 炉渣 、 煤渣或矿渣.This material is variously termed ash, clinker, cinders or slag.有时炉渣能有用处.In some cases the slag can be disposed of usefully.每年有数百万吨炉渣用于铺路.Millions of tons of slag now go into building roads eac...
维管组织经过叶枕进入叶柄.The vascular tissue passes through the pulvinus into the petiole proper.亮绿色椭圆型很薄的叶子, 长而有弹性的叶柄. 通常单个顶芽. 大型.Light green, elliptical, very thin, long flexible petiole. Usually single crown. Large.在茂密的叶柄端部开猩红色花的...
Staples such as bread, rice and tea are already being rationed.面包、大米和茶叶等日常必需品已实行配给。It's one of the globe's most important food staples , said plant geneticist Pamela Ronald.大米是全球最重要的主食之一,植物遗传学家潘梅拉·罗奈尔德如是说.Stapl...