🧩 词语组成解析
[医]马鲛
sierra
[[si'erə]]
n. 呈齿状起伏的山脉
🗣️ 情景例句
Thank you, Susan.
谢谢你， Susan。
Everyone is entitled to his own opinion.
每个人可以保留他的自己的意见。
The world had to wait almost another 100 years for the Channel Tunnel.
世界不得不再等将近100年才看到海峡隧道竣工。