As the challenge escalates, the need for teamwork elevates.面临的挑战越大, 越需要团队协同合作.I cannot understand why a minor disagreement escalates into a fist - fight.我真不明白为什么一点意见不合就变成了拳头相见.The second third escalates theand forces the...
催化剂是一种能加速化学反应的物质.A catalyst is a substance which speeds up a chemical reaction.各种陶土管用作转化催化剂的载体.Various ceramic materials have been suggested as supports for reforming catalyst.经过泡水试验,催化剂应不开裂或破碎.To pass the water test the...