他们力求把开发周期缩至18个月以下。They aim to cut production lead times to under 18 months.密探可能会力求败坏反对派的名声。Agents provocateurs may seek to discredit the opposition.赛跑选手力求抢占起跑有利位置。The runners jockeyed for position at the start....
上坡行驶时必须换慢挡.You have to gear down when you drive uphill.我从自行车下来,开始推着上坡.I dismounted and began to push my bicycle up the hill.我觉得上坡吃力.I found it hard to go up the slope....