Chromosorb
红色硅藻土色谱载体
🗣️ 情景例句
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
I'll know when the time comes.
到时候就知道了。
A crowd of people gathered round him and a lady rubbed his arm with soap and butter, but George was firmly stuck.
这时在他周围上了许多人，一位女士在乔治胳膊上抹了肥皂，黄油，但乔治的胳膊仍然卡得紧紧的。