拄: to lean on, to prop on...
初次: for the first time, first (meeting, attempt etc)...
讨价还价: to haggle over price, to bargain...
举办: to conduct, to hold...
身份: identity, aspect of one's identity (i.e. sth that one is – mayor, father, permanent resident etc), role, capacity (as in in his capacity as a... …), status (social, legal etc), position, rank...
将: to desire, to invite, to request...
土壤: soil...
成就: accomplishment, success, achievement, to achieve (a result), to create, to bring about...
气体: gas (i.e. gaseous substance)...
黑心: ruthless and lacking in conscience, vicious mind full of hatred and jealousy, black core (flaw in pottery)...