interest作为“兴趣”到底是可数还是不可数

1. 兴趣;关注;爱好[C][U][(+in)] I developed an interest in the machine. 我对这机器发生了兴趣。 I have lost my interest in chemistry. 我对化学已不感兴趣。 2. 趣味性[U][(+to)] Local color added interest to the novel. 地方色彩增加了这部小说的吸引力。 3. 感兴趣的事物或人[C] His two great interests in life are music and painting. 他生活中的两大兴趣是音乐和绘画。 4. 利益;利害;同业;同行[P1] We work for our common interests. 我们为共同的利益而工作。 5. 利息[U] I borrowed the money at 5% interest. 我以五分利息借了那笔钱。 6. 股份,股权[C][(+in)] He has an interest in the company. 他在这家公司拥有股份。 7. 重要性;影响[U][(+with)] Her interest with him is considerable. 她对他的影响相当大。 及物动词 vt. 1. 使发生兴趣;引起...的关心 Chemistry interests him. 他对化学感兴趣。 2. 使参与,使发生关系[(+in)] He interested me in politics. 他使我对政治发生兴趣。
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