草垫子

They took and shoved the bag through a rip in the straw tick that was under the feather-bed, and crammed it in a foot or two amongst the straw and said it was all right now, because a nigger only makes up the feather-bed, and don't turn over the straw tick only about twice a year, and so it warn't in no danger of getting stole now.

他们拿过袋子，往羽绒褥子底下一张草垫子的裂缝里使劲塞，塞了足足有一两英尺深。还说，这么一放，不会有什么问题了，因为一个黑奴只会整理整理羽绒褥子，不会动草垫子，草垫子一年只翻两回，把钱塞在里面，就不会有被偷的危险啦。

Nat didn't look when we put the witch pie in Jim's pan; and we put the three tin plates in the bottom of the pan under the vittles; and so Jim got everything all right, and as soon as he was by himself he busted into the pie and hid the rope ladder inside of his straw tick, and scratched some marks on a tin plate and throwed it out of the window-hole.

我们把魔法般的馅饼放进杰姆的锅里时，纳特并没有看一眼。我们又把三只白铁盘子放在锅底上饭食下面。这样，这一切杰姆都拿到了手。当只剩他一个大的时候，他立刻把馅饼掰开了，把绳梯塞在草垫子里。还在洋铁皮盘子底上划了一些记号，随后从窗洞里扔了出去。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。