Dibromopropanal
二溴丙醛
??? 情景例句
OK. I'll show you around. Let's go outside.
可以，我?guī)D(zhuǎn)一轉(zhuǎn)。走吧。
Hello, This is operator.
喂！我是接線員。
She was a famous actress When I was still at school.
當我還是學生時，她就是個著名的演員了。