enthusiasm [英][ɪnˈθju:ziæzəm][美][ɛnˈθuziˌæzəm]n.热情,热忱; 热衷的事物; 宗教的狂热;复数:enthusiasms 词组 the enthusiasm of。
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enthusiam是名词,热情激情,如果要指对某物充满激情热情,动词,则是enthuse,ing就是enthusing

英语:He positively and actively helped any child who is difficult in learning.
对人,对事情都很有热情,showing strong passion toward people and things.holding strong enthusiam toward people and things be enthusiastic for people and things

It's a curious fact,of which I can think of no satisfactory explann。Translation 1: 这是件我不能想出解释的事,就是正好那些天气最坏和寻找风景如画的地方最带有困难的欧洲国家是对乡村生活具有的热情和对自然景色具有的爱心最强烈和最普遍地。
Translation 2: 欧洲有些国家,天气坏透,那里。