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.

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