* fencing

n. 擊劍

* frost

n. 嚴(yán)寒；霜

* defrost

v. 除去(某物)的冰或霜；解凍

defrost the fridge, the car windscreen

給冰箱、汽車(chē)擋風(fēng)玻璃除霜。

A frozen chicken should be allowed to defrost completely before cooking.

凍雞應(yīng)徹底解凍後再烹調(diào)。

* forest

n. 森林

* deforest

v. 砍掉……森林，毀掉……森林

Two thirds of the region has been deforested in the past decade.

在過(guò)去十年里這個(gè)地區(qū)的森林有三分之二被毀掉。

* defend

v. 防衛(wèi)

a struggle to defend our homeland

保衛(wèi)我們祖國(guó)的斗爭(zhēng)

the need to defend democracy against fascism

保衛(wèi)民主、反抗法西斯的需要

* defender

n. 防守隊(duì)員，后衛(wèi)；保衛(wèi)者

It's his fourth season as an Arsenal defender.

這是他成為阿森納隊(duì)后衛(wèi)之后踢的第四個(gè)賽季。

He presented himself as a defender of democracy.

他以民主捍衛(wèi)者的姿態(tài)出現(xiàn)。

* defense

n. 防御，保護(hù)

soldiers who died in defense of their country

為保衛(wèi)祖國(guó)而獻(xiàn)身的戰(zhàn)士

When her brother was criticized she leapt to his defense.

她的兄弟受到批評(píng)時(shí)，她馬上跳出來(lái)衞護(hù)。

* defensive

a. 防御性的，防御用的

The prince drew up his forces in a strong defensive position.

親王將部隊(duì)布成堅(jiān)固的防御陣勢(shì)。

The rockets are a purely defensive measure against nuclear attack.

火箭純粹是針對(duì)核攻擊的防御性措施。