New Words：
peer [piə]
n.同龄人；同辈；身份(或地位)相同的人
v.凝视；仔细看；端详
peer at 凝视；细看；盯着看
Sample Sentences：
He peered at the label on the bottle.
He went to the window and peered out.
She peered at the neighbors from behind the curtain.
She peers through the mist, trying to find the right path.
Children are worried about failing in front of their peers.
New Words：
hatch [hætʃ]
v.孵化；孵出；策划；出壳
n.（船或飞机）舱口；舱门
Sample Sentences：
Chicks are hatching from the eggs.
Three eggs have already hatched out.
The soldier stuck his head up through the hatch.
I don't want to count my chickens before they are hatched.
New Words：
explore [iks'plɔ:r] v.探索；探讨；探究；勘探
explorer [ɪkˈsplɔrər] n. 探险者；勘探者；考察者
Sample Sentences：
We can hire bikes for a day to explore the town.
The experts are exploring every part of the island.
As soon as we arrived on the island we were eager to explore.
Christopher Columbus was one of the great explorers.
If you want to be an explorer, you must be adventurous.
The explorer told the boys about his adventures in the Arctic.
New Words：
clang [klæŋ] v.（使）发出铿锵声；（使）叮当作响
Sample Sentences：
The prison gate clanged shut.
He clanged a spoon against a glass.
The metal tool clanged when it hit the ground.
The door opened with a heavy clang.
The clang of the firebell alarmed the village.
New Words：
plain [plein]
n.平原
adj.清楚的；简单的；坦白的；平常的；朴素的；纯的
Sample Sentences：
She always wears plain clothes to work.
The meaning of the sentence is very plain.
To be plain with you, I know nothing about it.
When we reached the top of the mountain, a wide plain came into view.