mammal 哺乳动物
backbone 脊椎
warm-blooded 温血的,恒温的
cold-blooded 变温的
scale 磷
snake 蛇
turtle 龟
lizard 蜥蜴
feather 羽毛
migrate 迁徙
insect 昆虫
mosquito 蚊子
spread 传播
disease 疾病
unlike 不像...
convert 转化,改变
convert sth into sth 把...转化成...
scale 秤
ruler 尺子
measure 测量
unit 单位
units of ... ...的单位
units of weight 重量单位
units of length 长度单位
kilogram 千克
pound 磅
centimeter 厘米
inch 英寸
telescope 望远镜
microscope 显微镜
observe 观测
astronomer 天文学家
biologist 生物学家
appliance 器具
stove 炉灶
refrigerator 冰箱
fridge 冰箱
hammer 锤子
screwdriver 螺丝刀
nail 钉子
pound in nails 敲打钉子
turn a screw 拧螺丝钉
anniversary 周年纪念日
twentieth anniversary 20周年纪念日
eg：It's the first year anniverary of their first date.
start dating 开始约会
necklace 项链
put sth on 穿上、戴上某物
wait until later 等到之后,晚一点
can't wait to do sth迫不及待想做某事
ruin 破坏、毁掉
eg：You ruined my day.
somewhere else
eg：Let's try somewhere else.
It's okay to do sth ...也是可以的
eg：Sometimes it's okay to spend a little money.
be worth it 值得
eg：It was a lot of hard work,but it was worth it.
be worth sth 值多少钱
eg：The house must be worth a lot of money now.
be worth sth / doing sth 值得做某事
eg：The local museum is worth a visit.
eg：The moive is worth watching.
put it that way 那样说、那样叙述
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