gene
n.基因，遗传因子
Some people have genes that may put them at risk for cancer.
有些人的基因可能会带给他们罹患癌症的风险。
glide
vi.滑行
A huge eagle glided over the area, looking for prey.
一只大老鹰滑翔飞过这个区域寻找猎物。
goods
n.货品（恒用复数，不可数）
As of next month, there will be tax increases on a wide range of goods.
从下个月开始，许多种货物的课税将会增加。
grammar
n.文法（不可数）
English grammar is difficult to master without years of study.
没有多年的研习，英文语法很难精通。
grammatical
a.语法上的
The grammatical/grammar errors you made in your composition could have been avoided if you had been more careful.
你若更仔细一点的话，你作文中的那些语法错误原本是可以避免的。
habitual
a.习惯的，惯常的
He used to be a habitual smoker.
他以前是个烟瘾大的人。
The habitual thief was finally arrested by the police.
警方终于逮捕了这名惯偷。
harden
vt. vi.(使）变硬，硬化
Jane's husband kept cheating on her, so she finally hardened her heart and left him for good.
阿珍的老公不断地劈腿，终于她硬起心肠永远离他而去。
Add some more water before the concrete hardens.
趁着混凝土变硬前再添加一点水。
itch
n.痒；渴望 vt. vi.(使）发痒
I have an itch on the left side of my back. Can you scratch it for me?
我左边的背在痒。你可以帮我抓一下吗？
I have an itch for a good vacation.
我好想度个愉快的假期。
I have an itch to go to Kenting for a visit.
我好想到垦丁去玩一趟。
The fabric of the vest itches me.
这件背心的布料让我很痒。
My nose itches and I can't concentrate.
我的鼻子很痒，所以我无法专心。
itchy
a.痒的
My skin gets itchy in dry weather. =My skin itches in dry weather.
天气干燥时，我皮肤就会发痒。
itching
a.渴望的
I'm itching to try on that suit.
我好想要试穿那套西装。
Mary and her husband are itching for a child of their own.
玛丽和她老公好想要有自己的孩子。