1. Asia and Europe form a huge land mass.
    亚洲和欧洲连成一片广大的陆地。

2. Surrounded by a mass of papers, a housing worker picks up two selection forms and exclaims, “Likes chess, likes football; they're perfect together!”
    面对一大堆的资料，宿舍工作人员随便拿出两张待选的表格，叫道："这位喜欢象棋，那位爱好足球，两位住在一起是最理想的了！"

3. He identifies himself with its centre of gravity, its mass, its weight;
    他把自身和物体重心、质量、重量融为一体。