【英语时差8,16】耳石-上
时间：2019-02-15 作者：英语课 分类：英语时差8，16
Ear rocks, also known as “otoliths,” are tiny pebbles 1 of calcium 2 carbonate in our inner ear that help keep us balanced. They’re located deep inside the inner ear in a small pouch 3 called a utricle. When we move our heads, the tiny rocks move around and bump into nerve cells. These nerve cells send signals to our brain that tell it which way the head is oriented. It’s one way we know up from down. But problems with ear rocks can be a cause of chronic 4 dizziness or vertigo 5. Occasionally the little pebbles fall out of the utricle and can get into another part of the inner ear canals. When this happens, the brain senses that we’re moving much more than we really are, resulting in sensations of unsteadiness or dizziness.
- The pebbles of the drive crunched under his feet. 汽车道上的小石子在他脚底下喀嚓作响。
- Line the pots with pebbles to ensure good drainage. 在罐子里铺一层鹅卵石，以确保排水良好。
- We need calcium to make bones.我们需要钙来壮骨。
- Calcium is found most abundantly in milk.奶含钙最丰富。
- He was going to make a tobacco pouch out of them. 他要用它们缝制一个烟草袋。
- The old man is always carrying a tobacco pouch with him.这老汉总是随身带着烟袋。
- Famine differs from chronic malnutrition.饥荒不同于慢性营养不良。
- Chronic poisoning may lead to death from inanition.慢性中毒也可能由虚弱导致死亡。