全文 The whole conversation, with pinyin and English
妈妈：我们到动物园了！进去以前，先看看这个牌子。
wǒ men dào dòng wù yuán le jìn qù yǐ qián xiān kàn kan zhè ge pái zi
Mum: We're at the zoo! Before we go in, let's read this sign first.
俊杰：牌子上写着：请不要喂动物，也不要拍玻璃。
pái zi shang xiě zhe qǐng bú yào wèi dòng wù yě bú yào pāi bō li
Junjie: The sign says: please don't feed the animals, and don't tap on the glass.
妹妹：为什么不能喂动物？它们好像很饿。
wèi shén me bù néng wèi dòng wù tā men hǎo xiàng hěn è
his little sister: Why can't we feed the animals? They look very hungry.
妈妈：我们的食物会让动物生病，饲养员会喂它们。
wǒ men de shí wù huì ràng dòng wù shēng bìng sì yǎng yuán huì wèi tā men
Mum: Our food can make the animals sick. The keepers will feed them.
俊杰：妈妈，你看！那只猩猩坐在树上吃香蕉！
mā ma nǐ kàn nà zhī xīng xing zuò zài shù shang chī xiāng jiāo
Junjie: Mum, look! That orangutan is sitting in the tree eating a banana!
妹妹：我看不到！哥哥，你站在前面挡住我了。
wǒ kàn bu dào gē ge nǐ zhàn zài qián miàn dǎng zhù wǒ le
his little sister: I can't see! You're standing in front and blocking me.
俊杰：对不起，我们轮流看。你先站到前面来吧。
duì bu qǐ wǒ men lún liú kàn nǐ xiān zhàn dào qián miàn lái ba
Junjie: Sorry, let's take turns to look. You come and stand in front first.
妹妹：谢谢哥哥！哇，它还抱着小宝宝！
xiè xie gē ge wā tā hái bào zhe xiǎo bǎo bao
his little sister: Thank you! Wow, it's even holding a little baby!
妈妈：你们轮流看，真懂事。说话小声一点，不要吓到动物。
nǐ men lún liú kàn zhēn dǒng shì shuō huà xiǎo shēng yì diǎn bú yào xià dào dòng wù
Mum: Taking turns like that is very sensible. Talk a bit more quietly so you don't scare the animals.
俊杰：知道了。妈妈，接下来我们去看大象好吗？
zhī dào le mā ma jiē xià lái wǒ men qù kàn dà xiàng hǎo ma
Junjie: OK. Mum, shall we go and see the elephants next?
妈妈：好，跟着地图走，大象在左边。大家别走散了。
hǎo gēn zhe dì tú zǒu dà xiàng zài zuǒ biān dà jiā bié zǒu sàn le
Mum: OK, let's follow the map. The elephants are on the left. Everyone stay together.
妹妹：我拉着妈妈的手，就不会走散了！
wǒ lā zhe mā ma de shǒu jiù bú huì zǒu sàn le
his little sister: If I hold Mum's hand, I won't get lost!