Placenta previa
前置胎盘
🧩 词语组成解析
placenta
[plə'sentə]
n. 胎盘，胎座;
[医] 前置的(如胎盘)
🗣️ 情景例句
That's a great idea.
这是一个绝妙的主意。
OK. You'll have to use a credit card or leave a $100 deposit.
好。你必须使用信用卡，否则要付100美元的押金。
it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.
提出把它作为星际间唯一可辨认的广播频率就为期不远了。