Bivalvular
a. 似双壳贝的
🗣️ 情景例句
They always were,
他们过去如此，
There's many a slip between the cup and the lip.
天有不测风云。
becomes so worn and unreliable that it eventually is not worth mending.
磨损太厉害，老得一点儿也不准了，最终会不值得修理了。