New words：

mug [mʌg] n. 杯子；一杯的量；马克杯

Sample Sentences：

He made a mug of cocoa for me.
He has a mug of cocoa before bed.
The mug tipped over, spilling hot coffee everywhere.

cocoa ['kəukəu] n.可可粉；可可饮料
spill [spɪl] v.溢出；涌出；蜂拥而出

New words：

cabin ['kæbin] n.（轮船上生活或睡觉的）隔间；（飞机的）座舱；（通常为木制的）小屋

Sample Sentences：

My uncle lived in a log cabin.
Please book me a cabin on the ship.
We moved into a cabin with electricity but no running water.

New words：

afloat [ə'fləut]
adj.漂浮的
adv.漂浮；在海上；在船上；传播

Sample Sentences：

She spent seven days afloat on a raft.
I always feel like I am drowning trying to stay afloat.
If someone or something is afloat, they remain partly above the surface of water and do not sink.

New words：

solar ['səulər] adj. 太阳的；太阳能的

Sample Sentences：

There are nine planets in the solar system.
Solar energy can be transformed into power.
We can use the solar energy to make electric and get warm.

New words：

convert /kənˈvɜːrt/ v.转换；转化；(使)转变

Sample Sentences：

Coal can be converted to gas.
Water is converted into steam if it is boiled.
He wanted to convert his dollars into Chinese Yuan.
The solar cell can convert the energy of sunlight into electric energy.