互相帮助

We befriended each other when wolves were foraging around our Mesolithic camps for food, and our own ancestors quickly discovered that 'dogs' could help them track and hunt animals.

我们互相获益。当狼在我们人类阵营附近寻找食物时，我们的祖先就很快发现了&狗&能够帮助我们寻找和跟踪猎物。

As a pioneer of American public library movement, Green's thought of library science lies mainly in the following aspects: acting public libraries as social education institute, paying attention to maintaining good relationship between public libraries and public schools, insisting on public library exerting important role in school teaching, advocating for mutual trust and dependence between public library board and librarian, supplying every public library inquirer with reference service, and evaluating the history and figures of American public library movement in objective and appropriate words.

美国公共图书馆运动的先驱格林的图书馆学思想主要体现在：把公共图书馆作为重要的社会教育机构，重视维持公共图书馆与公共学校之间的良好关系，坚持公共图书馆在学校教学中发挥重要的地位和作用，主张公共图书馆理事会与馆长之间互相信任与相互依存，为任何前来公共图书馆寻求帮助的读者提供参考咨询服务，以客观而中肯的语言评价美国公共图书馆运动的历史与人物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。