应当加重这一机器的某些零件。

The weight of certain parts of this machine should be increased.

说话加重语气

make one's tone more serious

加重工作负担

add to one's workload

责任大为加重

increase the responsibility by a large margin

经济负担加重了。

The economic burden has become heavier.

病势加重了。

The patient's condition has worsened.

被告的罪更为加重了。

The defendant's crime is now even more serious.

任务加重两倍。

The task is now twice as difficult.