They show no disposition to improvise or to take risks.他们不愿意临时凑合或冒险。Wearing helmets gave cyclists a false sense of security and encouraged them to take risks.戴头盔给骑自行车的人一种错误的安全感，怂恿他们去冒险。Managers use a full arsenal of moti...
他的三角学分数很低.He received a low mark for trigonometry.该山的高度已用三角学测得.The height of the mountain has been determined by trigonometry.恒河三角学洲的地下淤积物中含有砷.The underground sediment of the Ganges Delta contains arsenic....