Cryopumping
冷凝排气; 低温排气
🗣️ 情景例句
Did any of your previous positions require typing?
你以前的职务中有没有需要打字的？
He who laughs last laughs best.
谁笑在最后，谁笑得最好。
Those planning a trip to remote areas, or intending to live in countries where drinking water is not readily available, should know about the various possible methods for making water safe.
那些计划去偏远地区旅行，或在饮用水不现成的国家居住的人，应该知道如何使水适于饮用的各种办法。