1. explore vi.勘查, 探测
例句:Can you explore the market possibility for us?
您能为我们考察一下市场前景吗?
2. encourage vt.促进; 支持; 鼓励
例句:As to writing, we do not encourage them to scrawl too early.
至于书法,我们不鼓励他们过早地乱写。
3. discussion n.讨论,谈论
例句:He kept out of the discussion.
他不介入他们之间的争论。
4. negative adj.消极的
例句:He gave a negative answer.
他做了否定的回答。