New words:

wander [ˈwɑndər]
n.徘徊;游荡;闲逛;溜达
v.漫游;游荡;闲逛;走神


Sample Sentences:

Try not to let your mind wander.
Jarvis found his attention wandering.
Her thoughts wandered back to her youth.
I went to the park and had a wander around.
When he got bored he wandered around the fair.
The child was found wandering the streets alone.


New words:

challenge [ˈtʃæləndʒ]
n.挑战;质疑
v.向(某人)挑战;考查;盘问;对…怀疑(或质疑)


Sample Sentences:

He raised a challenge to the decision.
This math problem is a ​​challenge​​ for most students.
The teacher gave us a ​​challenge​​ to read 10 books this month.

Tom ​​challenged​​ me to a race after school.
The police ​​challenged​​ his ID at the airport.
Their school challenged ours to a football match.
I don't have the courage to challenge my boss's decision


New words:

record /ˈrekɔːd/ n.记录;唱片;记载;经历


Sample Sentences:

She loves listening to jazz ​​records​​.
The police checked his criminal ​​record​​`.
His sports ​​record​​ includes many awards.
She broke the world ​​record​​ in swimming.
The school has a ​​record​​ of all students’ grades.


New words:

record /rɪˈkɔːd/ v.记录;录制;记载;录(音);(仪器)显示,标明​


Sample Sentences:

The thermometer ​​recorded​​ 38°C.
The device ​​records​​ the speed of the car.
She ​​recorded​​ her daily thoughts in a diary.
I want to ​​record​​ my favorite radio program.
They ​​recorded​​ a video message for their grandma.
The teacher asked us to ​​record​​ the experiment steps.


record /ˈrekɔːd/ n.记录;唱片;记载;经历

New words:

millimetre [ˈmɪlɪˌmitər] n.毫米;千分之一米
millimeter [ˈmɪlɪˌmitər] n.毫米;千分之一米


Sample Sentences:

One centimetre equals ten millimetres.
These jellyfish were only one millimetre long.
Brisbane recorded 790 millimetres of rain in a week.
The land moves northwest by four millimetres per year.