The publication is the officialorgan of the American Association for Cancer Research.
该出版物是美国癌症研究协会的官方报刊。
《柯林斯英汉双解大词典》
2
No official participant shall be engaged in any business activity without the approval of the approving authority and the registration by the competent registration organ.
未经审批机关批准和登记主管机关核准登记注册,官方参展者不得从事经营活动。
3
An official participant may be engaged in any business activity only after being legally registered by the competent registration organ and obtaining a business License.