Foster sister
[医]收养的姊妹（无法律效应的）
🧩 词语组成解析
foster
['fɔstɚ]
v. 培养;抚育;促进;代养;
adj. 寄养的;代养的;
sister
['sɪstɚ]
n. 姐妹;（称志同道合者）姐妹;修女;护士;
adj. 姐妹般的;同类型的;
v. 如姐妹般相待;
🗣️ 情景例句
Bicycle theft is on the increase in the big cities.
大城市里盗窃自行车的案件与日俱增。
Sorry, but she is out.
很抱歉，她出去了。
This immense chasm has been formed by an underground stream which has tunneled a course through a flaw in the rocks.
这个深邃的洞穴是由一条地下暗泉冲刷岩石中的缝隙并使之慢慢变大而形成的。