2. cooperate vi.合作; 配合, 协助
例句：We hope we can cooperate even more closely in the future.
希望我们今后能更加密切地合作。
3. profusion n. 充沛;丰富,大量;过分
例句：Grapes grow in profusion there.
那里盛产葡萄。
4. survivor n.幸存者;残存者;生还者
例句：A massive sea search has failed to find any survivors.
经过大规模的海上搜救仍未找到幸存者。
