kangaroo [kæŋɡəˈruː]
n. 大袋鼠
例句1, The kangaroo hopped gracefully across the open field.
那只大袋鼠优雅地跳过了开阔的田野。
例句2, We saw a mother kangaroo carrying her baby in her pouch at the zoo.
我们在动物园里看到一只袋鼠妈妈把她的宝宝放在育儿袋里。
例句3, Kangaroos are native to Australia and are known for their powerful hind legs.
袋鼠原产于澳大利亚，以其强壮的后腿而闻名。
例句4, The children were excited to learn about the kangaroo’s unique way of moving.
孩子们对学习袋鼠独特的移动方式感到兴奋。
例句5, During our trip to Australia, we were lucky enough to spot a wild kangaroo in the bush.
在我们去澳大利亚的旅行中，我们幸运地在灌木丛中发现了一只野生袋鼠。

keep (kept, kept) [kiːp]
v. 保持；保存；继续不断 vt. 培育，饲养
例句1, She keeps her room tidy every day.
她每天都保持房间整洁。
例句2, We should keep some money for emergencies.
我们应该为紧急情况保存一些钱。
例句3, He kept working until midnight.
他一直工作到午夜。
例句4, My grandmother keeps chickens in her backyard.
我奶奶在后院饲养鸡。
例句5, The teacher keeps encouraging us to study hard.
老师不断鼓励我们努力学习。

key [kiː]
n. 钥匙;答案;键;关键
例句1, I found the key to the locked door under the mat.
我在垫子下找到了锁门的钥匙。
例句2, The key to solving this problem is to stay calm and think clearly.
解决这个问题的关键是保持冷静并清晰地思考。
例句3, She pressed the key on the keyboard to type the letter.
她按下键盘上的键来输入字母。
例句4, The key to success is hard work and perseverance.
成功的关键是努力和坚持不懈。

keyboard [kiːbɔːd]
n. 键盘
例句1, She typed her essay quickly on the keyboard.
她在键盘上快速地打出了她的文章。
例句2, The musician played a beautiful melody on the electronic keyboard.
音乐家在电子键盘上演奏了一首优美的旋律。
例句3, He cleaned the keyboard to remove the dust.
他清理了键盘以去除灰尘。
例句4, The keyboard is an essential tool for computer users.
键盘是电脑用户必不可少的工具。

kick [kɪk]
v.& n. 踢
例句1, The soccer player gave a powerful kick to the ball, sending it straight into the goal.
那位足球运动员用力踢了一脚球，直接射进了球门。
例句2, She felt a sudden kick in her stomach, reminding her of the baby growing inside.
她突然感到肚子里有一阵踢动，提醒着她里面正在成长的小宝宝。
例句3, He decided to kick the bad habit of smoking for the sake of his health.
为了健康，他决定戒掉吸烟的坏习惯。
例句4, The horse gave a swift kick to the fence, breaking one of the wooden planks.
那匹马迅速踢了一脚栅栏，把一块木板踢断了。

kid [kɪd]
n. 小孩
例句1, The kid was playing happily in the park.
那个小孩在公园里玩得很开心。
例句2, She always treats her students like her own kids.
她总是把学生当作自己的孩子一样对待。
例句3, Don’t kid yourself; you need to study harder.
别骗自己了；你需要更努力学习。

kill [kɪl]
v. 杀死，弄死
例句1, The hunter used a bow and arrow to kill the deer.
猎人用弓箭杀死了那头鹿。
例句2, The virus can kill thousands of people if not controlled.
如果不加以控制，这种病毒可能会杀死成千上万的人。
例句3, She tried to kill the pain with some medicine.
她试图用药物来缓解疼痛。
例句4, The bad news almost killed his spirit.
这个坏消息几乎摧毁了他的精神。
例句5, He wanted to kill time by reading a book.
他想通过读书来打发时间。

kilo [ˈkiːləʊ]
n. 千克；千米
例句1, The package weighs exactly one kilo.
这个包裹正好重一千克。
例句2, We ran a kilo in under five minutes during the race.
我们在比赛中用不到五分钟跑了一千米。

kilogram [ˈkɪləuɡræm]
n. 千克
例句1, The package weighs exactly one kilogram.
这个包裹正好重一千克。
例句2, She bought a kilogram o

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