Usfs
[医]United States Frequency Standard
🗣️ 情景例句
and ... and when the baby comes,
而且……而且婴儿出生以后，
We shouldn't have any trouble if the traffic isn't to heavy.
如果交通不太拥挤的话，我们不会有什么困难。
The study of custom can be profitable only after certain preliminary propositions have been accepted,
只有在某些基本的主张被接受下来、同时有些主张被激烈反对时，