但在共生和侵位的方式不同.But they differ in association and mode of emplacement.工程上完全新的共生关系显然是可能性不大.Engineering completely new symbiotic relationship is obviously not an imminent possibility.在那里看到成功的共生群落一点也不奇怪!It's not surprisi...
Teachers often view youth workers as undisciplined and ineffectual.老师们常认为青少年工作者纪律性差且能力低下。Teachers inform me that Tracey's behaviour has improved no end.老师们告诉我特雷西的行为大有改善。Employees are paid salaries commensurate with ...