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All lifeguards must obtain a certificate that indicates they're qualified to perform CPR.
所有救生员都必须有资格证,代表他们有资格进行心肺复苏术。
n. 救生员;(lifeguard的复数)
All lifeguards must obtain a certificate that indicates they're qualified to perform CPR.
所有救生员都必须有资格证,代表他们有资格进行心肺复苏术。