Valveless
a. 无阀的\\n[医] 无瓣的
🗣️ 情景例句
because he didn't want the responsibility of holding them.
因为他不想承担保管它们的责任。
Experience is a school from which one can never graduate.
经验无止境。
Now, smoke still rose up from the warm ground over the desolate hills.
而现在，发热的地面上仍然升腾着烟雾，弥漫在荒凉的山丘上。