New Words：

explorer [ɪkˈsplɔrər] n. 探险者；勘探者；考察者

Sample Sentences：

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.

adventurous [əd'ventʃərəs] adj. 爱冒险的；大胆的；惊险的；有冒险精神的

New Words：

explore [ɪkˈsplɔr] v. 探索；探险；探究；勘探

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.

expert [ˈekˌspɜrt] n. 专家；行家；能手
eager [ˈiɡər] adj. 热切的；渴望的；渴求的

New Words：

airflow ['ɛəfləu] n. 气流
nostril ['nɔstril] n. 鼻孔
count on 指望;依靠;依赖;期望;

Sample Sentences：

You can always count on Jim.
That was the only thing they could count on.
We can't count on the good weather lasting.

Do you feel the airflow going through your nostrils?
All South American monkeys have flat noses with widely spaced nostril.

New Words：

impatient [im'peiʃənt] adj. 不耐烦的；急躁的
impatiently [im'peiʃənli] adv. 不耐烦地；急躁地

Sample Sentences：

You're too impatient with her. She's only a child.
She was impatient to know what had happened to her son.

She waved them away impatiently.
He waited impatiently for the train to arrive.

New Words：

tap[tæp]
n.水龙头；龙头；轻敲；轻击；轻拍；旋塞
v.开发；轻拍；轻敲；轻叩

Sample Sentences：

He tapped me on the shoulder.
He kept tapping his fingers on the table.
That girl tapped her fingers on the desk impatiently.

He cleaned his hands in the cold water from the tap.
He left the tap open to fill the kitchen sink with water.

impatient [im'peiʃənt] adj. 不耐烦的；急躁的
impatiently [im'peiʃənli] adv. 不耐烦地；急躁地