Scaup
n. 斑背潜鸭
🗣️ 情景例句
the first settlers in America.
他们是第一批来美国定居的移民。
Can you keep an eye on my bag?
帮我看一下包好吗？
It is a good idea to start a part-time job so long as it does not affect your studies.
只要不影响学习，干兼职工作的想法是不错的。