有底

"A fungus of the genus Boletus, having an umbrella-shaped cap with spore-bearing tubules on the underside and including both edible and poisonous species."

牛肝菌属真菌，有底面长有孢生小管的伞状冠，分为食用和有毒

Parts of the structure of a certain complexity, there are two spindle hole, and a large flat bottom, so parts of rough forming a gray iron foundry, cabinet parts is a typical parts, so its processing procedures and fixture design also has typical .

该零件结构有一定复杂性，有两个主轴孔，并且有底面的大平面，因此零件毛坯采用灰铸铁铸造成形，箱体零件是一种典型零件，因此其加工工艺规程和夹具设计也具有典型性。

Malolactic fermentation is a very important processing technology for deacidificaton in modern winemaking.

苹果酸乳酸发酵是现代葡萄酒酿造工艺中重要的生物降酸手段。MLF是L 苹果酸在乳酸菌的苹果酸乳酸酶催化下转变成L 乳酸的酶促反应过程，该过程没有底物水平的磷酸化，但在MLF过程中苹果酸确实能够刺激细菌的比生长速率，增加细菌生物量。

Most believe the footprints are nothing more than 11 animal tracks, which had been made 12 as they melted and refroze in the snow.

只有这样，才能弄清作者思路，情节发展过程，建立起必要的背景知识，做到心中有底。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。