1. hinge on/upon 取决于
Mr Obama has so far been unwilling to support such measures, but his resolve may hinge upon the mood of the electorate.
奥巴马迄今为止一直不愿支持这些举措，但他的决定可能还是要取决于选民的情绪h!+hO,GlP0hb_LOd。

2. bring forth 使……展现出来
The eternally young spirit of America has been a source of the strength all of you bring forth today and has been a beacon of hope to the world.
美国永恒的青春气息是今天各位所展现出来的力量的源泉，也是这个世界希望的灯塔Vlg%)t[Ji*O8]do。

3. hard sell 硬性推销
But these plans may turn out to be a hard sell.
但是，这些计划可能很难有说服力8Fn63IVb~&4rBh&cC。

4. tap into 进入；利用，发挥
But it's less symptomatic of India's ambition to unleash cutting-edge innovation, he says, as much as its desire to tap into a new market.
不过，尽管渴望进入这个新的市场，他表示，但它与印度刺激尖端技术革新的抱负并无多大关系|rw*[PUFWM。