検索内容:
effective
This method is very effective.
ephemeral, transitory
His smile was ephemeral, disappearing in an instant.
religious (committed to the practice of religion)
He is leading a religious life.
voluntary, of one's own initiative, of one's own accord
He started cleaning voluntarily.
perpetual, permanent, everlasting
A new approach is needed to solve this perpetual problem.
modern
His house has a very modern design.
secondary
His secondary role greatly contributed to the success of the team.
penny wise and pound foolish; you get what you pay for
He always buys cheap things, so in the end, it becomes 'penny wise and pound foolish'.
(chemistry) acidic oxide
Acidic oxides react with water to produce acids.
(chemistry) amphoteric oxide
Aluminum is an amphoteric oxide, it reacts with both acids and bases.
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