New Words：
gain [gein]
v.获得；增加；赢得；取得；（经过努力）到达
n.增加；利益；好处；利润
Sample Sentences：
No pains, no gains.
Our army gained the battle.
He has gained rich experience in these years.
After swimming for an hour, he finally gained the shore.
New Words：
profit ['prɔfit]
n.利润；收益；利益；赢利
v.获益；得到好处；对…有用（或有益）
profit by/from 得益于
Sample Sentences：
He learned to profit by his mistakes.
You can profit by my mistakes and avoid them yourself.
We gained a lot of profit from your advice.
The company made a healthy profit on the deal.
There is very little profit in selling newspapers at present.
New Words：
trim [trim] v. 修剪；修整；剪下；削减
Sample Sentences：
I'll have my hair trimmed tomorrow.
The trees were trimmed in perfect shaps.
Ask the meat man to trim away the fat edges of the meat.
We have to trim our cost if we want to increase our profit.
profit ['prɔfit] n. 利润；收益；利益；赢利
New Words：
mood [mu:d] n. 情绪；心情；气氛；氛围
Sample Sentences：
She's in a good mood today.
I am not in the mood to argue.
He's always in a bad mood on Mondays.
His mood suddenly changed and he became calm.
New Words：
saw [sɔ:]
n.锯
v.用锯子锯
Sample Sentences：
The dead branches were sawed off.
I saw a man saw a saw with a saw.
The only tools in the house are a hammer and a saw.