Massless
出国 Abroada. [物]无质量的
🗣️ 情景例句
are important for the sales of your book.
对于你这本书的销售很重要。
It is never too late to mend.
亡羊补牢，犹为未晚。
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。