occur的音标：occur的英式发音音标为：[ə'kɜ:(r)]occur的美式发音音标为：[ə'kɚ]...

An implantation can occur only under certain proper conditions.植入只有在某些合适的条件下才能够发生.Most of the manipulations occur instead in the etheric or astral planes.大部分操控反之发生在以太或星光层.Apogean tides occur when the moon is at the apoge...

occur的现在进行时为：occurring...

If these drugs are stopped abruptly then some withdrawal symptoms may occur.如果突然停服这些药，则可能出现一些戒断症状。Keep a pad handy to jot down queries as they occur.手边放一本便笺簿，以便有问题时随时记下。Nitrates are chemicals that occur naturally in wate...

occur的近义词/同义词有：come, happen, take, place, transpire, about, about, exist, place, be, transpire, become, come, happen, take。vi.occur的近义词（发生）：come, happen, take, place, transpire, about。occur的近义词（其他释义）：about, exist, place,...

occur的一般过去时为：occurred...

occur的近义词有：happen, occur, chance, take place。下面这些词语都可表示"发生"的含义：happen：普通用词，泛指一切客观事物或情况的发生，强调动作的偶然性。occur：较正式用词，可指意外地发生，也可指意料中的发生。chance：侧重事前无安排或无准备而发生的事，特指巧合。take place：多指通过人为安排的发生。...

vi.发生，出现，闪现...

occur的现在完成时为：occurred...

occur的第三人称单数（三单）为：occurs...