1. The two boys owned the boat jointly.
    这两个男孩共同拥有那条船。

2. They took care of that problem jointly.
    他们共同处理了那个问题。

1. jointly的意思

1. 连带地：jointless 无接缝的 | jointly 连带地 | jointlysigned,declared,sponsored 联名

2. 共同;联合的;连带的：joint tenants 共同租借人 | jointly 共同;联合的;连带的 | judgement 判决;裁决

3. 联合地,共同地：65.encouragement 鼓励 | 66.grow 增长 | 67.jointly 联合地,共同地

1. in conjunction with
    combined

    e.g. our salaries put together couldn''t pay for the damage
           we couldn''t pay for the damages with all our salaries put together

    Synonym: collectivelyconjointlytogether with

2. in collaboration or cooperation

    e.g. this paper was written jointly