1.Scientists say insect milk could be a perfect non-dairy alternative to cow's milk.
alternative 替代品
New ways to treat arthritis may provide an alternative to painkillers.
治疗关节炎的新方法可能会提供一种止痛药的替代品 。
2.A single crystal of cockroach milk is estimated to contain more than three times the energy of an equivalent mass of dairy milk.
equivalent 相等物;等价物
Breathing such polluted air is the equivalent of smoking ten cigarettes a day.
呼吸污染这么严重的空气等于每天抽十支烟