🧩 词语组成解析
sir
[sɝ]
n. 先生;（用于姓名前）爵士;（中小学生对男教师的称呼）先生;老师;
n. 拉尔夫（男子名）
david
[['deivid]]
n. 大卫；戴维（男子名）
n. 理查森（姓氏）
🗣️ 情景例句
Can you tell me what time you close?
您能告诉我关门的时间吗？
Where are my glasses?
我的眼镜在哪儿？
and near its lower reaches there is a long tailing-off which is almost certainly the result of material transported out to deep water after being eroded from the continental masses.
在这个地带的低处是很长的一段尾沙地段，基本上可以断定这个地段是大陆块体上侵蚀下来的物质被水冲到深水处形成的。