n. 化学药品 a. 化学的, 化学上用的
Chemical pesticides generally kill a much wider range of pests (害虫) than any single natural pesticide.
四级 · CET-4 2026年6月 第1套
The use of chemicals to get rid of insects or unwanted plant life can increase indirect as they can include petroleum-based ingredients.
六级 · CET-6 2025年6月 第1套
Instead of using toxic chemicals, students working with HFC help out with the campus grounds.
六级 · CET-6 2025年6月 第1套
One survey taker explained, “The greatest challenge for me was continuing to believe in myself, when all the messages I was getting were that I would never be taken seriously or promoted or given raises at the same rate as men, who were clearly less qualified and not as smart as I was.” A chemical engineer who worked in manufacturing agreed, “You have to prove yourself just because you are female.
四级 · CET-4 2024年12月 第1套
A retired vice president from a major chemical company stated, “Young women engineers are on an equal footing until they have children, then they struggle to balance work and family—and compete with men who don’t have the same household responsibilities.” But over the years, things have changed a lot.
四级 · CET-4 2024年12月 第1套